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US Patent: 103,776
Improved screw-threading machine
Patentee:
Treat T. Prosser (exact or similar names) - Chicago, IL

USPTO Classifications:
72/89

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. P. Sherman
P. A. Hoyne
Patent Dates:
Granted: May 31, 1870

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Description:
See the biography of the inventor in the description for patent 15,438.

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