Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Holophane SAS
Original Assignee
Holophane SAS
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Filing date
Publication date
Application filed by Holophane SASfiledCriticalHolophane SAS
Application grantedgrantedCritical
Publication of FR839066ApublicationCriticalpatent/FR839066A/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
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR839066D1937-12-021937-12-02Dispositif optique pour la projection d'images multiples
ExpiredFR839066A
(fr)