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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
G03B15/00—Special procedures for taking photographs; Apparatus therefor
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR317520D1902-01-031902-01-03
Improvements in cameras
ExpiredFR317520A
(en)