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US Patent: 52,810
Improved apparatus for punching
Patentee: John F. Allen (exact or similar names) - New York, NY USPTO Classifications: 269/241, 83/631 Tool Categories: metalworking tools : metal punches Assignees: None Manufacturer: Porter-Allen Engine Co. - New York, NY Witnesses: Henry E. Roeder David Mosher	Patent Dates: Granted: Feb. 27, 1866 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Porter-Allen Engine Co.

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