CPC Subgroup
G03B 11/04 Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
Full Title
Filters or other obturators specially adapted for photographic purposes > Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
5 direct subcodes
Child Classifications
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- G03B 11/06 Lens caps for exposure making