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US Patent: 88,980
Improved power-hammer
Patentee:
Treat T. Prosser (exact or similar names) - Chicago, IL

USPTO Classifications:
72/434, 72/441

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry Waller, Jr.
R. N. Eagle
Patent Dates:
Granted: Apr. 13, 1869

Patent Pictures:
USPTO (New site tip)
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