G - Physics – 03 – B
Patent
G - Physics
03
B
95/74
G03B 17/26 (2006.01) G03B 17/32 (2006.01)
Patent
CA 1082023
ABSTRACT OF THE DISCLOSURE A film sheet cassette accommodates optical images by holding the edges of a film sheet between a frame and a pressure plate. A cam arrangement permits the film to be released for loading and unloading through an end slot. The frame defines guide tracks for a slide plate to prevent light access to the film when not in use.
290499
Fechtner Harold F.
Owens Bruce E.
E.i. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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