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1364906
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Patent Grant
1364906
References
Source
Patent Number
1,364,906
Date Filed
Not available
Date Issued
Tuesday, January 11, 1921
103 years ago
CPC
B61D41/00 - Indicators for reserved seats Warning or like signs Devices or arrangements in connection with tickets
G09G3/24 - using incandescent filaments
US Classifications
040 - Card, picture, or sign exhibiting
340 - Communications: electrical
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