DIFF Subgroup
G03B 11/04 Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
Introduced: September 1968
Title
Titles differ between systems:
IPC: Hoods or caps for eliminating unwanted light from lenses, viewfinders, or focusing aids
CPC: Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
Full Title
Full titles differ between systems:
IPC:
Filters or other obturators specially adapted for photographic purposes > Hoods or caps for eliminating unwanted light from lenses, viewfinders, or focusing aids
CPC:
Filters or other obturators specially adapted for photographic purposes > Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
CPC subdivides this area 5x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Child Classifications
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