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RADIO PROJEKTOR KONSORTIUM
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RADIO PROJEKTOR KONSORTIUM
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Application filed by RADIO PROJEKTOR KONSORTIUMfiledCriticalRADIO PROJEKTOR KONSORTIUM
Application grantedgrantedCritical
Publication of FR626126ApublicationCriticalpatent/FR626126A/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
G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR626126D1926-01-111926-12-08Procédé et appareil permettant de projeter des images formées sur un support opaque
ExpiredFR626126A
(fr)