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1892863
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Information
Patent Grant
1892863
References
Source
Patent Number
1,892,863
Date Filed
Not available
Date Issued
Tuesday, January 3, 1933
91 years ago
CPC
E21B31/12 - Grappling tools
E21C37/22 - Hand tools or hand-held power-operated tools specially adapted for dislodging minerals
Y10T407/14 - with means to apply fluid to cutting tool
US Classifications
407 - Cutters, for shaping
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