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US Patent: 123,951
Improvement in Screw Cutting Machines
Patentee:
Levi W. Stockwell (exact or similar names) - Ravenna, Portage County, OH

USPTO Classifications:
279/118, 408/176, 408/57, 470/190, 470/83

Tool Categories:
metalworking machines : screw machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Feb. 20, 1872

Patent Pictures:
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