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1418247
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Information
Patent Grant
1418247
References
Source
Patent Number
1,418,247
Date Filed
Not available
Date Issued
Tuesday, May 30, 1922
102 years ago
CPC
E04F10/0644 - with mechanisms for unrolling or balancing the blind
Y10T74/19688 - Bevel
US Classifications
074 - Machine element or mechanism
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