Symbol Version, Language
Search in DEPATISnetSearch in DPMAregister

Search request: No search request has been comitted.

IPC entry: H04R 17/02 1-dot subgroup [Version 2024.01 (current), Language EN - English]

Symbol Select IPC entry Title
A
Show hierarchy
HUMAN NECESSITIES
B
Show hierarchy
PERFORMING OPERATIONS; TRANSPORTING
C
Show hierarchy
CHEMISTRY; METALLURGY
D
Show hierarchy
TEXTILES; PAPER
E
Show hierarchy
FIXED CONSTRUCTIONS
F
Show hierarchy
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G
Show hierarchy
PHYSICS
H
Show hierarchy
ELECTRICITY
H01
Show hierarchy
ELECTRIC ELEMENTS
H02
Show hierarchy
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H03
Show hierarchy
ELECTRONIC CIRCUITRY
H04
Show hierarchy
ELECTRIC COMMUNICATION TECHNIQUE
H04B
Show hierarchy
TRANSMISSION [4]
H04H
Show hierarchy
BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
H04J
Show hierarchy
MULTIPLEX COMMUNICATION (peculiar to transmission of digital information H04L 5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N 7/08; in exchanges H04Q 11/00)
H04K
Show hierarchy
SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04L
Show hierarchy
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) [4]
H04M
Show hierarchy
TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
H04N
Show hierarchy
PICTORIAL COMMUNICATION, e.g. TELEVISION [4]
H04Q
Show hierarchy
SELECTING (switches, relays, selectors H01H;  wireless communication networks H04W) [1, 2009.01]
H04R
Show hierarchy
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) [6]
H04R 1/00
Show hierarchy
Details of transducers (diaphragms H04R 7/00; characterised by the nature of the transducer, see the relevant group of main groups H04R 9/00-H04R 23/00; mountings specially adapted for telephone equipment H04M 1/02) [1, 2006.01]
H04R 3/00
Show hierarchy
Circuits for transducers (arrangements for producing a reverberation or echo sound G10K 15/08; amplifiers H03F) [1, 2006.01]
H04R 5/00
Show hierarchy
Stereophonic arrangements (stereophonic pick-ups H04R 9/16, H04R 11/12, H04R 17/08, H04R 19/10) [1, 2006.01]
H04R 7/00
Show hierarchy
Diaphragms for electromechanical transducers; Cones [1, 2006.01]
H04R 9/00
Show hierarchy
Transducers of moving-coil, moving-strip, or moving-wire type [1, 2006.01]
H04R 11/00
Show hierarchy
Transducers of moving-armature or moving-core type [1, 2006.01]
H04R 13/00
Show hierarchy
Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet [1, 2006.01]
H04R 15/00
Show hierarchy
Magnetostrictive transducers [1, 2006.01]
H04R 17/00
Show hierarchy
Piezoelectric transducers; Electrostrictive transducers [1, 2006.01]
H04R 17/02
Show hierarchy
. Microphones [1, 2006.01]
H04R 17/04
Show hierarchy
. Gramophone pick-ups using a stylus; Recorders using a stylus [1, 2006.01]
H04R 17/06
Show hierarchy
. . comprising two or more styli or transducers (H04R 17/08 takes precedence) [1, 2006.01]
H04R 17/08
Show hierarchy
. . signals being recorded or played-back by vibration of a stylus in two orthogonal directions simultaneously [1, 2006.01]
H04R 17/10
Show hierarchy
. Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency [1, 2006.01]
H04R 19/00
Show hierarchy
Electrostatic transducers [1, 2006.01]
H04R 21/00
Show hierarchy
Variable-resistance transducers (gaseous-resistance transducers H04R 23/00; magneto-resistive transducers H04R 23/00) [1, 2006.01]
H04R 23/00
Show hierarchy
Transducers other than those covered by groups H04R 9/00-H04R 21/00 [1, 2006.01]
H04R 25/00
Show hierarchy
Deaf-aid sets [1, 2006.01]
H04R 27/00
Show hierarchy
Public address systems (circuits for preventing acoustic reaction H04R 3/02) [1, 2006.01]
H04R 29/00
Show hierarchy
Monitoring arrangements; Testing arrangements [1, 2006.01]
H04R 31/00
Show hierarchy
Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor [1, 2006.01]
H04S
Show hierarchy
STEREOPHONIC SYSTEMS [3]
H04W
Show hierarchy
WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M 1/72) [2009.01]
H05
Show hierarchy
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H10
Show hierarchy
SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR [2023.01]
H99
Show hierarchy
SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]

IPC entry to be compared: No IPC entry bookmarked for comparison view [Version , Language ]