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Allen B du Mont Laboratories Inc
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Allen B du Mont Laboratories Inc
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Application filed by Allen B du Mont Laboratories IncfiledCriticalAllen B du Mont Laboratories Inc
Application grantedgrantedCritical
Publication of FR927797ApublicationCriticalpatent/FR927797A/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
G03B21/602—Lenticular screens
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR927797D1945-06-121946-06-11Perfectionnement aux écrans de projection et procédé de fabrication de ces écrans
ExpiredFR927797A
(fr)