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KINE MATERIEL CINEMATOGRAPHIQU
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KINE MATERIEL CINEMATOGRAPHIQU
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Application filed by KINE MATERIEL CINEMATOGRAPHIQUfiledCriticalKINE MATERIEL CINEMATOGRAPHIQU
Application grantedgrantedCritical
Publication of FR557943ApublicationCriticalpatent/FR557943A/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
G03B21/54—Accessories
G03B21/56—Projection screens
G03B21/60—Projection screens characterised by the nature of the surface
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR557943D1922-08-101922-10-30Procédé de préparation des écrans métalliques pour projections lumineuses
ExpiredFR557943A
(fr)