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US Patent: 1,283,740
Drill
Patentee: Clarence B. Groff (exact or similar names) - Camden, NJ USPTO Classifications: 408/226, 408/227 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: P. F. Nagel L. Dowville H. S. Fairbanks C. D. McVay	Patent Dates: Applied: Apr. 04, 1910 Granted: Nov. 05, 1918 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Wiedershein & Fairbanks - patent attorneys Appliication renewed 27 Dec. 1917.

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