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ERNESTO HERRMANN
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ERNESTO HERRMANN
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Application filed by ERNESTO HERRMANNfiledCriticalERNESTO HERRMANN
Application grantedgrantedCritical
Publication of FR370898ApublicationCriticalpatent/FR370898A/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)
FR370898D1906-10-291906-10-29Procédé et dispositif pour la production de bandes chronophotographiques pour cinématographes
ExpiredFR370898A
(fr)