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US Patent: 957,760
Tool Chuck
Patentee: John S. Fray (exact or similar names) - Bridgeport, CT USPTO Classifications: 279/40, 81/113 Tool Categories: woodworking tools : braces : brace chucks Assignees: John S. Fray Co. - Bridgeport, CT Manufacturer: John S. Fray Co. - Bridgeport, CT Witnesses: Mary L. Dimond Catherine A. Smith	Patent Dates: Applied: Oct. 20, 1909 Granted: May 10, 1910 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Chuck jaws with a main longitudinal groove, deeper at a point nearer to the forward edge of the jaws.

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