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US Patent: 448,525
Punching Machine
Patentee: De Lancy Kennedy (exact or similar names) - New York, NY USPTO Classifications: 74/106, 74/98, 83/632 Tool Categories: metalworking machines : metalworking presses : punch presses Assignees: None Manufacturer: Pratt & Whitney Co. - Hartford, Hartford County, CT Witnesses: Richard C. Shimeall W. W. Barnes A. Ruppert	Patent Dates: Applied: Dec. 11, 1890 Granted: Mar. 17, 1891 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pratt, Whitney & Co.

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