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1391010
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Information
Patent Grant
1391010
References
Source
Patent Number
1,391,010
Date Filed
Not available
Date Issued
Tuesday, September 20, 1921
103 years ago
CPC
B23P9/00 - Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact
C21D7/12 - by expanding tubular bodies
C21D9/10 - shotgun barrels
C21D9/12 - barrels for ordnance
US Classifications
089 - Ordnance
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