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1829619
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Patent Grant
1829619
References
Source
Patent Number
1,829,619
Date Filed
Not available
Date Issued
Tuesday, October 27, 1931
93 years ago
CPC
B23B31/16225 - with a centre
Y10T82/2568 - Center
Y10T82/26 - Work driver
US Classifications
082 - Turning
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