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US Patent: 164,391
Improvement in metal-shearing machines
Patentee:
Francis A. Pratt (exact or similar names) - Hartford, CT

USPTO Classifications:
83/450, 83/468.6, 83/468.7

Tool Categories:

Assignees:
Pratt & Whitney Co. - Hartford, CT

Manufacturer:
Pratt, Whitney & Co. - Hartford, CT

Witnesses:
Theodore G. Ellis
Wendell R. Curtis

Patent Dates:
Applied: Mar. 19, 1875
Granted: Jun. 15, 1875

Patent Pictures: [ 1 | 2 ]
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Vintage Machinery entry for Pratt & Whitney Co.
Description:
Seen on an old Pratt & Whitney milling machine.

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