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1950481
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Patent Grant
1950481
References
Source
Patent Number
1,950,481
Date Filed
Not available
Date Issued
Tuesday, March 13, 1934
90 years ago
CPC
A63J13/00 - Panoramas, dioramas, stereoramas, or the like
US Classifications
352 - Optics: motion pictures
472 - Amusement devices
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