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2837294
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Information
Patent Grant
2837294
References
Source
Patent Number
2,837,294
Date Filed
Not available
Date Issued
Tuesday, June 3, 1958
66 years ago
CPC
A63J5/10 - Arrangements for making visible or audible the words spoken
B42D19/005 - comprising reel to reel type winding and unwinding mechanisms
G09F11/29 - of a band other than endless
US Classifications
242 - Winding, tensioning, or guiding
040 - Card, picture, or sign exhibiting
352 - Optics: motion pictures
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