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US Patent: 1,256,222
Drill Socket
Patentee: John F. Graybill (exact or similar names) - Flora, IL USPTO Classifications: 279/103, 279/14 Tool Categories: metalworking machines : drilling and boring : drill presses : drill press chucks Assignees: John F. Graybill - Flora, IL Earl Arbuthnot - Flora, IL Horatio C. Chaffin - Flora, IL Manufacturer: Not known to have been produced Witnesses: J. L. Boyles E. W. Bryan	Patent Dates: Applied: Mar. 14, 1917 Granted: Feb. 12, 1918 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Watson E. Coleman - patent attorney

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