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US Patent: 127,853
Improement in Drop-Hammer
Patentee:
Joseph E. Crisp (exact or similar names) - Charlestown, Middlesex County, MA

USPTO Classifications:
72/438

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jun. 11, 1872

Patent Pictures:
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