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PAUL-JULES RUEZ
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PAUL-JULES RUEZ
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Application filed by PAUL-JULES RUEZfiledCriticalPAUL-JULES RUEZ
Application grantedgrantedCritical
Publication of FR17034EpublicationCriticalpatent/FR17034E/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)
FR17034D1911-10-301912-10-07Appareil automatique pour éteindre les incendies dans les cabines cinématographiques
ExpiredFR17034E
(fr)