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1790581
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Information
Patent Grant
1790581
References
Source
Patent Number
1,790,581
Date Filed
Not available
Date Issued
Tuesday, January 27, 1931
93 years ago
CPC
B44B3/001 - by copying
B44B2700/021 - by copying
Y10T409/301232 - including pantograph cutter-carrier
US Classifications
409 - Gear cutting, milling, or planing
033 - Geometrical instruments
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