DIFF Subgroup
H03C 1/34 by means of light-sensitive element
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Amplitude modulation > by means of light-sensitive element
CPC:
Amplitude modulation (H03C5/00, H03C7/00 take precedence) > by means of light-sensitive element
No child classifications to compare. This is a leaf node in both IPC and CPC.