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US Patent: 742,291
Upright Tapping and Boring Machine
Patentee: Leslie H. Colburn (exact or similar names) - Franklin, Venango County, PA USPTO Classifications: 408/134, 408/135, 408/14, 470/181 Tool Categories: metalworking machines : drilling and boring : drill presses Assignees: Leslie H. Colburn - Franklin, Venango County, PA Baker Bros. - Toledo, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 19, 1902 Granted: Oct. 27, 1903 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Baker Brothers "Vintage Machinery" entry for Colburn Machine Tool Co.

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