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Publication of FR1029158ApublicationCriticalpatent/FR1029158A/fr
A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
A63H33/00—Other toys
A63H33/22—Optical, colour, or shadow toys
G—PHYSICS
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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/32—Details specially adapted for motion-picture projection
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR1029158D1950-12-061950-12-06Dispositif tournant pour l'observation d'images animées
ExpiredFR1029158A
(fr)