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1930359
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Information
Patent Grant
1930359
References
Source
Patent Number
1,930,359
Date Filed
Not available
Date Issued
Tuesday, October 10, 1933
91 years ago
CPC
G02B6/0071 - with elongated shape
G09F2013/1836 - using a frame-like light source
Y10S362/812 - Signs
US Classifications
040 - Card, picture, or sign exhibiting
362 - Illumination
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