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Filing date
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Publication of BE818826ApublicationCriticalpatent/BE818826A/nl
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
G03B21/10—Projectors with built-in or built-on screen
G03B21/11—Projectors with built-in or built-on screen for microfilm reading
G03B21/118—Reader-printers
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Projection-Type Copiers In General
(AREA)
Projection Apparatus
(AREA)
Light Sources And Details Of Projection-Printing Devices
(AREA)
BE1006128A1973-08-201974-08-14Apparaat en werkwijze voor het bekijkken en terugvergroten van een microbeeld
BE818826A
(nl)