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US Patent: 892,107
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Patentee: George R. Willis (exact or similar names) - Franklin, Venango County, PA USPTO Classifications: 74/333 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms metalworking machines : drilling and boring : vertical boring mills Assignees: Colburn Machine Tool Co. - Franklin, Venango County, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 30, 1903 Granted: Jun. 30, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Colburn Machine Tool Co.

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