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Symbol IPC-Stellen auswählen Titel
A
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HUMAN NECESSITIES
B
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PERFORMING OPERATIONS; TRANSPORTING
C
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CHEMISTRY; METALLURGY
D
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TEXTILES; PAPER
E
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FIXED CONSTRUCTIONS
F
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MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G
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PHYSICS
G01
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INSTRUMENTS
G01
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MEASURING (counting G06M)TESTING
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 se G09F; transmission of pictures H04N)
G08B
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SIGNALLING OR CALLING SYSTEMSORDER TELEGRAPHSALARM SYSTEMS (signalling arrangements on vehicles B60Q , B62D 41/00; railway signalling systems or devices B61L; on cycles B62J 3/00 , B62J 6/00; safes or strong-rooms with alarm devices E05G; signalling or alarm devices in mines E21F 17/18; sensitive measuring elements, see the appropriate subclasses of G01; traffic control systems G08G; visual indicating means G09; sound-producing devices G10; radio or near-field calling systems H04B 5/00 , H04B 7/00; selecting arrangements H04Q 7/00 , H04Q 9/00; loudspeakers, microphones, gramohpone pick-ups or like acoustic electromechanical transducers H04R)
G08C
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TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmission systems F15B; sensing members for specific physical variables, see the relevant subclasses, e.g. of G01 , of H01; indicators or recorders, see the relevant subclasses, e.g. G01D , G09F; mechanical means for transferring the output of a sensing member into a different variable G01D 5/00; self-balancing bridges G01R; position control in general G05D 3/00; mechanical control systems G05G; systems for transmitting "on/off" signals only, systems for transmitting alarm conditions G08B; order telegraph systems G08B 9/00; generating electric pulses H03K; coding, decoding or code conversion, in general H03M; transmission of digital information H04L; selective calling from one station to another H04Q 9/00) [4]
G08C 13/00
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Arrangements for influencing the relationship between signals at input and output, e.g. differentiating, delaying (transferring the output of a sensing member to measuring arrangements giving results not yielding momentary value G01D 1/00; systems for control of position involving comparison between actual and desired values G05D 3/00; computing in general G06)
G08C 15/00
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Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path (multiplex transmission in general H04J)
G08C 17/00
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Arrangements for transmitting signals characterised by the use of a wireless electrical link [6]
G08C 19/00
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Electric signal transmission systems (G08C 17/00 takes precedence)
G08C 19/02
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in which the signal transmitted is magnitude of current or voltage (G08C 19/36 , G08C 19/38 take precedence)
G08C 19/04
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. . using variable resistance
G08C 19/06
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. . using variable inductance
G08C 19/08
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. . . differentially influencing two coils
G08C 19/10
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. . using variable capacitance
G08C 19/12
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in which the signal transmitted is frequency or phase of ac
G08C 19/14
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. . using combination of fixed frequencies
G08C 19/16
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in which transmission is by pulses
G08C 19/18
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. . using a variable number of pulses in a train
G08C 19/20
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. . . operating on dynamo-electric devices, e.g. step motor
G08C 19/22
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. . by varying the duration of individual pulses
G08C 19/24
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. . using time shift of pulses
G08C 19/26
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. . by varying pulse repetition frequency
G08C 19/28
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. . using pulse code
G08C 19/30
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in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels (G08C 19/38 takes precedence)
G08C 19/32
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. . of one conductor or channel
G08C 19/34
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. . of a combination of conductors or channels
G08C 19/36
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using optical means to convert the input signal (analogue/digital conversion per se H03M 1/00)
G08C 19/38
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using dynamo-electric devices (operated by pulses G08C 19/20; dynamo-electric machines per se H02K)
G08C 19/40
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. . of which only the rotor or the stator carries a winding to which a signal is applied, e.g. using step motor
G08C 19/42
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. . . having three stator poles
G08C 19/44
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. . . having more than three stator poles
G08C 19/46
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. . of which both rotor and stator carry windings (having squirrel-cage rotor G08C 19/40)
G08C 19/48
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. . . being of the type with a three-phase stator and a rotor fed by constant-frequency ac, e.g. selsyn, magslip
G08C 21/00
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Systems for transmitting the position of an object with respect to a predetermined reference system, e.g. tele-autographic system (converting the pattern of mechanical parameters, e.g. force or presence, into electrical signals G06K 11/00) [5]
G08C 23/00
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Non-electric signal transmission systems, e.g. optical systems
G08C 25/00
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Arrangements for preventing or correcting errorsMonitoring arrangements
G08G
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TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F 9/00; radar systems or analogous systems, designed for traffic control G01S 13/91; sonar or lidar systems specially designed for traffic control G01S 15/88 , G01S 17/88) [2]
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
H
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ELECTRICITY

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