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US Patent: 1,428,612
Power Hammer
Patentee:
William E. Sheehy (exact or similar names) - Newfields, Rockingham County, NH

USPTO Classifications:
72/431

Tool Categories:
metalworking machines : forging machines : power hammers

Assignees:
William E. Sheehy - Newfields, Rockingham County, NH
Leonard W. Sheehy - Newfields, Rockingham County, NH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 02, 1921
Granted: Sep. 12, 1922

Patent Pictures:
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