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US Patent: 568,429
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Patentee: Henry J. Colburn (exact or similar names) - Toledo, OH USPTO Classifications: 292/2, 292/201, 292/53, 292/96, 70/268, 70/DIG.048 Tool Categories: Assignees: Henry J. Colburn - Toledo, OH Leslie H. Colburn - Toledo, OH Irving W. Colburn - Fitchburg, MA Manufacturer: Not known to have been produced Witnesses: Johnson Thurston Anna D. Van Etten	Patent Dates: Applied: Dec. 19, 1895 Granted: Sep. 29, 1896 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Colburn Machine Tool Co.

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