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Priority claimed from DE19722254695external-prioritypatent/DE2254695A1/de
Priority claimed from DE19732320495external-prioritypatent/DE2320495A1/de
Application filedfiledCritical
Publication of NL7314190ApublicationCriticalpatent/NL7314190A/xx
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
Landscapes
Physics & Mathematics
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General Physics & Mathematics
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Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like
(AREA)