DIFF Subgroup
H04R 5/02 Spatial or constructional arrangements of loudspeakers
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Stereophonic arrangements > Spatial or constructional arrangements of loudspeakers
CPC:
Stereophonic arrangements (stereophonic pick-ups H04R9/16, H04R11/12, H04R17/08, H04R19/10) > Spatial or constructional arrangements of loudspeakers
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open