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REGINALD-IGNATIUS ATHERTON
Original Assignee
REGINALD-IGNATIUS ATHERTON
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Application filed by REGINALD-IGNATIUS ATHERTONfiledCriticalREGINALD-IGNATIUS ATHERTON
Application grantedgrantedCritical
Publication of FR524062ApublicationCriticalpatent/FR524062A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/18—Fire preventing or extinguishing
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR524062A1920-03-111920-09-13Perfectionnements à la construction d'appareils de projections cinématographiques
ExpiredFR524062A
(fr)
Adaptation des appareils de projections cinématographiques ordinaires à objectif unique, à la projection d'images cinématographiques donnant l'illusion du relief