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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
G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
G03B3/02—Focusing arrangements of general interest for cameras, projectors or printers moving lens along baseboard
Landscapes
Physics & Mathematics
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General Physics & Mathematics
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FR808273D1935-04-251936-04-24Perfectionnements apportés aux appareils photographiques à boîtes
ExpiredFR808273A
(fr)