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3880511
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Information
Patent Grant
3880511
References
Source
Patent Number
3,880,511
Date Filed
Not available
Date Issued
Tuesday, April 29, 1975
49 years ago
CPC
G03B23/00 - Devices for changing pictures in viewing apparatus or projectors
G03B27/56 - Mounting enlarger head on column Mounting reproduction camera on column
US Classifications
353 - Optics: image projectors
355 - Photocopying
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