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A
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SECTION A — HUMAN NECESSITIES
B
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SECTION B — PERFORMING OPERATIONSTRANSPORTING
C
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SECTION C — CHEMISTRYMETALLURGY
D
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SECTION D — TEXTILESPAPER
E
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SECTION E — FIXED CONSTRUCTIONS
F
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SECTION F — MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
G
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SECTION G — PHYSICS
G01
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INSTRUMENTS
G01
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MEASURINGTESTING
G01B
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MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONSMEASURING ANGLESMEASURING AREASMEASURING IRREGULARITIES OF SURFACES OR CONTOURS
G01C
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MEASURING DISTANCES, LEVELS OR BEARINGSSURVEYINGNAVIGATIONGYROSCOPIC INSTRUMENTSPHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F;  radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effect, propagation time, of radio waves, analogous arrangements using other waves G01S)
G01D
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MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLEARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASSTARIFF METERING APPARATUSMEASURING OR TESTING NOT OTHERWISE PROVIDED FOR (means structurally associated with lightning or other overvoltage discharging apparatus for recording the operation thereof G01R; displaying information in general G09F; recording in a way which requires playback through a transducer G11B)
G01F
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MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVELMETERING BY VOLUME (milk flow sensing devices in milking machines or devices A01J 5/01; measuring or recording blood flow A61B 5/02, A61B 8/06; metering media to the human body A61M 5/168; burettes or pipettes B01L 3/02; arrangements of liquid volume meters or volume-flow meters in liquid-delivering apparatus, e.g. for retail sale purposes, B67D 7/16; pumps, fluid motors, details common to measuring or metering devices and pumps or fluid motors F01-F04; locating, determining distance or velocity using reflection or reradiation of radio waves, analogous arrangements using other waves G01S; systems for ratio control G05D 11/00) [2, 5]
G01G
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WEIGHING (sorting by weighing B07C 5/16)
G01G 1/00
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Weighing apparatus involving the use of a counterweight or other counterbalancing mass
G01G 3/00
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Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
G01G 5/00
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Weighing apparatus wherein the balancing is effected by fluid action
G01G 7/00
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Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups G01G 1/00-G01G 5/00
G01G 9/00
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Methods of, or apparatus for, the determination of weight, not provided for in groups G01G 1/00-G01G 7/00
G01G 11/00
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Apparatus for weighing a continuous stream of material during flowConveyer-belt weighers
G01G 13/00
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Weighing apparatus with automatic feed or discharge for weighing-out batches of material (for weighing a continuous stream G01G 11/00; check-weighing G01G 15/00; for fluids G01G 17/04; apportioning by weight materials to be mixed G01G 19/22; combinatorial weighing G01G 19/387) [5]
G01G 15/00
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Arrangements for check-weighing of materials dispensed into removable containers (packaging aspects B65B)
G01G 17/00
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Apparatus for, or methods of, weighing material of special form or property (determining weight by measuring volume G01F)
G01G 19/00
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Weighing apparatus or methods adapted for special purposes not provided for in groups G01G 11/00-G01G 17/00
G01G 19/02
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for weighing wheeled or rolling bodies, e.g. vehicles
G01G 19/03
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. . for weighing during motion (G01G 19/04, G01G 19/07 take precedence) [3]
G01G 19/04
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. . for weighing railway vehicles
G01G 19/06
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. . . on overhead rails
G01G 19/07
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. . for weighing aircraft
G01G 19/08
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for incorporation in vehicles (arrangements on vehicles B60P 5/00)
G01G 19/10
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. . having fluid weight-sensitive devices
G01G 19/12
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. . having electrical weight-sensitive devices
G01G 19/14
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for weighing suspended loads (G01G 3/00 takes precedence; incorporation of weighing devices in cranes B66C 1/40, B66C 13/16)
G01G 19/16
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. . having fluid weight-sensitive devices
G01G 19/18
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. . having electrical weight-sensitive devices
G01G 19/20
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. . for weighing unbalanced loads
G01G 19/22
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for apportioning materials by weighing prior to mixing them (ratio regulation G05D 11/00)
G01G 19/24
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. . using a single weighing apparatus
G01G 19/26
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. . . associated with two or more counterweighted beams
G01G 19/28
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. . . having fluid weight-sensitive devices
G01G 19/30
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. . . having electrical weight-sensitive devices
G01G 19/32
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. . using two or more weighing apparatus
G01G 19/34
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. . with electrical control means
G01G 19/36
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. . with mechanical control means
G01G 19/38
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. . programme controlled, e.g. by perforated tape
G01G 19/387
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for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value [5]
G01G 19/393
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. . using two or more weighing units [5]
G01G 19/40
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with provisions for indicating, recording, or computing price or other quantities dependent on the weight (indicating means for weighing apparatus G01G 23/18; recording means for weighing apparatus G01G 23/18; computers in general G06)
G01G 19/41
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. . using mechanical computing means
G01G 19/413
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. . using electromechanical or electronic computing means
G01G 19/414
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. . . using electronic computing means only [5]
G01G 19/415
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. . . . combined with recording means [5]
G01G 19/417
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. . with provision for checking computing part of balance
G01G 19/42
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. . for counting by weighing (G01G 19/387 takes precedence) [5]
G01G 19/44
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for weighing persons
G01G 19/46
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. . Spring balances specially adapted for this purpose
G01G 19/48
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. . Pendulum balances specially adapted for this purpose
G01G 19/50
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. . having additional measuring devices, e.g. for height
G01G 19/52
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Weighing apparatus combined with other objects, e.g. with furniture (with walking-sticks A45B 3/08)
G01G 19/54
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. . combined with writing implements or paper-knives
G01G 19/56
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. . combined with handles of tools or of household implements
G01G 19/58
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. . combined with handles of suit-cases or trunks
G01G 19/60
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. . combined with fishing equipment, e.g. with fishing rods
G01G 19/62
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Over or under weighing apparatus [3]
G01G 19/64
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Percentage-indicating weighing apparatus, i.e. for expressing the weight as a percentage of a predetermined or initial weight [3]
G01G 21/00
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Details of weighing apparatus
G01G 23/00
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Auxiliary devices for weighing apparatus
G01H
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MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES (generation of mechanical vibrations without measurement B06B, G10K; measuring position, direction or velocity of an object G01C, G01S; measuring quasi-steady pressure of a fluid G01L 7/00; determining unbalance G01M 1/14; determining properties of material by sonic or ultrasonic waves transmitted therethrough G01N; systems using the reflection or reradiation of acoustic waves, e.g. acoustic imaging, G01S 15/00; seismology, seismic prospecting, acoustic prospecting G01V 1/00; acousto-optical devices per seG02F; obtaining records by techniques analogous to photography using ultrasonic, sonic or infrasonic waves G03B 42/06; speech analysis or synthesis, speech recognition G10L; information storage based on relative movement between record carrier and transducer G11B; piezo-electric, electrostrictive or magnetostrictive elements in general H01L; manufacture of electromechanical resonators by processes which include measurement of frequency with consequential modification of the resonator H03H 3/00) [4]
G01J
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MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHTCOLORIMETRYRADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) [2]
G01K
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MEASURING TEMPERATUREMEASURING QUANTITY OF HEATTHERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (sensing temperature changes for compensating measurements of other variables or for compensating readings of instruments for variations in temperature, seeG01D or relevant subclass for variable measured; radiation pyrometry G01J; investigating or analysing materials by use of thermal means G01N 25/00; compound sensitive elements, e.g. bimetallic, G12B 1/02)
G01L
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MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (methods or devices for measuring specially adapted for metal-rolling mills B21B 38/00; sensing pressure changes for compensating measurements of other variables or for compensating readings of instruments for variations in pressure, see G01D or other relevant subclasses for the variable measured; weighing G01G;  converting a pattern of forces into electrical signals G06K 11/00) [4]
G01M
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TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURESTESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
G01N
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (separating components of materials in general B01D, B01J, B03, B07; apparatus fully provided for in a single other subclass, see the relevant subclass, e.g. B01L; measuring or testing processes other than immunoassay, involving enzymes or micro-organisms C12M, C12Q; investigation of foundation soil in situE02D 1/00; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N 11/00; sensing humidity changes for compensating measurements of other variables or for compensating readings of instruments for variations in humidity, seeG01D or the relevant subclass for the variable measured; testing or determining the properties of structures G01M; measuring or investigating electric or magnetic properties of materials G01R; systems in general for determining distance, velocity or presence by use of propagation effects, e.g. Doppler effect, propagation time, of reflected or reradiated radio waves, analogous arrangements using other waves G01S; determining sensitivity, graininess, or density of photographic materials G03C 5/02; testing component parts of nuclear reactors G21C 17/00)
G01P
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MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCKINDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B 5/02, A61B 8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L 3/00; vehicle lighting systems adapted to indicate speed B60Q 1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C 23/00; measuring velocity of sound G01H; measuring velocity of light G01J 7/00; determining direction or velocity of solid objects by reflection or reradiation of radio or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V)
G01Q
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SCANNING-PROBE TECHNIQUES OR APPARATUSAPPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING-PROBE MICROSCOPY [SPM] [2010.01]
G01R
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MEASURING ELECTRIC VARIABLESMEASURING MAGNETIC VARIABLES (measuring physical variables of any kind by conversion into electric variables, see Note (4) following the title of class G01; measuring diffusion of ions in an electric field, e.g. electrophoresis, electro-osmosis, G01N; investigating non-electric or non-magnetic properties of materials by using electric or magnetic methods G01N; indicating correct tuning of resonant circuits H03J 3/12; monitoring electronic pulse counters H03K 21/40; monitoring operation of communication systems H04)
G01S
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RADIO DIRECTION-FINDINGRADIO NAVIGATIONDETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVESLOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVESANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01T
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MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N 23/00; electric discharge tubes for analysing radiation or particles H01J 40/00, H01J 47/00, H01J 49/00)
G01V
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GEOPHYSICSGRAVITATIONAL MEASUREMENTSDETECTING MASSES OR OBJECTSTAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B 29/02) [4, 6]
G01W
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METEOROLOGY (influencing weather conditions A01G 15/00; dispersing fog E01H 13/00; instruments for measuring single variables in general, see the appropriate subclasses of class G01, e.g. G01K, G01L; radar, sonar, lidar or analogous systems, designed for meteorological use G01S 13/95, G01S 15/88, G01S 17/95)
G02
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OPTICS (making optical elements or apparatus B24B, B29D 11/00, C03, or other appropriate subclasses or classes; materials per se, see the relevant places, e.g. C03B, C03C)
G03
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PHOTOGRAPHYCINEMATOGRAPHYANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVESELECTROGRAPHYHOLOGRAPHY (reproduction of pictures or patterns by scanning and converting into electrical signals H04N) [4]
G04
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HOROLOGY
G05
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CONTROLLINGREGULATING
G06
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COMPUTINGCALCULATINGCOUNTING (score computers for games A63B 71/06, A63D 15/20, A63F 1/18; combinations of writing implements with computing devices B43K 29/08)
G07
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CHECKING-DEVICES
G08
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SIGNALLING (indicating or display devices per seG09F; transmission of pictures H04N)
G09
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EDUCATINGCRYPTOGRAPHYDISPLAYADVERTISINGSEALS
G10
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MUSICAL INSTRUMENTSACOUSTICS
G11
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INFORMATION STORAGE
G12
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INSTRUMENT DETAILS
G21
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NUCLEONICS
G21
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NUCLEAR PHYSICSNUCLEAR ENGINEERING
G99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
H
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SECTION H — ELECTRICITY

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