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1964549
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Information
Patent Grant
1964549
References
Source
Patent Number
1,964,549
Date Filed
Not available
Date Issued
Tuesday, June 26, 1934
90 years ago
CPC
G09F11/325 - the display elements being stored in the form of rolls fixed in between transporting belts or chains
US Classifications
040 - Card, picture, or sign exhibiting
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