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1446447
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Information
Patent Grant
1446447
References
Source
Patent Number
1,446,447
Date Filed
Not available
Date Issued
Tuesday, February 27, 1923
101 years ago
CPC
B21H1/16 - for bearings
Y10S29/049 - Work hardening with other step
Y10T16/39 - Ferrules, rings, and thimbles
Y10T29/49693 - Roller making
US Classifications
384 - Bearings
016 - Miscellaneous hardware
029 - Metal working
072 - Metal deforming
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