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US Patent: 270,366
Drill
Patentees: John Sellers Bancroft (exact or similar names) - Philadelphia, PA William H. Thorne (exact or similar names) - Philadelphia, PA USPTO Classifications: 408/230 Tool Categories: metalworking machines : grinders : sharpening machines : drill sharpening machines Assignees: William Sellers - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 22, 1882 Granted: Jan. 09, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for William Sellers & Co.

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