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US Patent: 523,311
Pipe-vise
Patentee: George F. Haven (exact or similar names) - Brooklyn, NY USPTO Classifications: 269/251, 269/265 Tool Categories: work holding : vises : pipe and chain vises Assignees: Lewis Tool Co. - New York, NY Manufacturer: Lewis Tool Co. - New York, NY Witnesses: W. J. Morgan Worth Osgood	Patent Dates: Applied: Mar. 17, 1894 Granted: Jul. 17, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Carl Matthews

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