Stereophonic arrangements (stereophonic pick-ups H04R9/16, H04R11/12, H04R17/08, H04R19/10)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Stereophonic arrangements

CPC: Stereophonic arrangements (stereophonic pick-ups H04R9/16, H04R11/12, H04R17/08, H04R19/10)

Full titles differ between systems:

IPC:

Stereophonic arrangements

CPC:

Stereophonic arrangements (stereophonic pick-ups H04R9/16, H04R11/12, H04R17/08, H04R19/10)

Stereophonic pick-ups, i.e. wherein signals are recorded or played back by vibration of a stylus in two orthogonal directions simultaneously , , ,

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

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H04R 5/02 Spatial or constructional arrangements of loudspeakers +1 CPC IPC+CPC Available in IPC and CPC
H04R 5/027 Spatial or constructional arrangements of microphones, e.g. in dummy heads since 1980 IPC+CPC Available in IPC and CPC
H04R 5/033 Headphones for stereophonic communication since 1980 +1 CPC IPC+CPC Available in IPC and CPC
H04R 5/04 Circuit arrangements, IPC+CPC Available in IPC and CPC

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

Class H04,2013–2023, worldwide · Source: EPO PATSTAT