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US Patent: 88,981
Improvement in machines for heading bolts
Patentee:
Treat T. Prosser (exact or similar names) - Chicago, IL

USPTO Classifications:
470/140, 470/147

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. McKenney
W. C. Dodge
Patent Dates:
Granted: Apr. 13, 1869

Patent Pictures:
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