CPC Subgroup
G02B 23/14 Viewfinders (for photographic apparatus G03B13/02)
Full Title
Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices > Viewfinders (for photographic apparatus G03B13/02)
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open