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FERNAND BONNADIER
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FERNAND BONNADIER
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Application filed by FERNAND BONNADIERfiledCriticalFERNAND BONNADIER
Application grantedgrantedCritical
Publication of FR379666ApublicationCriticalpatent/FR379666A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B11/00—Filters or other obturators specially adapted for photographic purposes
G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
G03B11/046—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids for viewfinders or eyepieces
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR379666A1907-07-051907-07-05Dispositif pour la mise au point des appareils photographiques
ExpiredFR379666A
(fr)