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EMILE JACQUES DELENS
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EMILE JACQUES DELENS
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Application filed by EMILE JACQUES DELENSfiledCriticalEMILE JACQUES DELENS
Application grantedgrantedCritical
Publication of FR522346ApublicationCriticalpatent/FR522346A/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
G03B23/00—Devices for changing pictures in viewing apparatus or projectors
G03B23/02—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor
G03B23/04—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor with linear movement
G03B23/046—Picture changing devices
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR522346A1920-08-121920-08-12Appareil classeur pour l'observation des vues stéréoscopiques ou panoramiques
ExpiredFR522346A
(fr)