DIFF Subgroup
G02B 23/18 for binocular arrangements
Introduced: September 1968
Full Title
Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices > Housings; Caps; Mountings; Supports, e.g. with counterweight > for binocular arrangements
No child classifications to compare. This is a leaf node in both IPC and CPC.