DIFF Subgroup
G08C 23/04 using light waves, e.g. infrared
Introduced: January 1995
Full Title
Full titles differ between systems:
IPC:
Non-electric signal transmission systems, e.g. optical systems > using light waves, e.g. infrared
CPC:
Non-electrical signal transmission systems, e.g. optical systems > using light waves, e.g. infrared
No child classifications to compare. This is a leaf node in both IPC and CPC.