CPC Subgroup
G02B 23/10 reflecting into the field of view additional indications, e.g. from collimator
Full Title
Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices > involving prisms or mirrors (G02B23/14 takes precedence) > reflecting into the field of view additional indications, e.g. from collimator
1 direct subcode
Child Classifications
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