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US Patent: 751,522
Power Hammer
Patentee:
Arthur Alfred Koch - Montezuma, Poweshick County, IA

USPTO Classifications:
192/224.1, 72/441, 72/451

Tool Categories:
metalworking machines : forging machinery

Assignees:
None

Manufacturer:
Marshall Foundry & Machine Shop - Marshalltown, Marshall County, IA

Witnesses:
Charles W. Clark
Jennie Allely
H. Walker
C. R. Ferguson

Patent Dates:
Applied: Feb. 27, 1903
Granted: Feb. 09, 1904

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Marshall Foundry & Machine Shop

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