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US Patent: 686,275
Power Hammer
Patentee:
Martin Erickson (exact or similar names) - Waubay, Day County, SD

USPTO Classifications:
72/433

Tool Categories:
metalworking machines : forging machines : power hammers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jul. 30, 1900
Granted: Nov. 12, 1901

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
Application renewed, 08 Jun., 1901.

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