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US Patent: 211,911
Metal Screw Machine
Patentee:
Allen Johnson (exact or similar names) - Ottumwa, Wapello County, IA

USPTO Classifications:
279/66, 470/62, 74/53

Tool Categories:
metalworking machines : screw machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 12, 1878
Granted: Feb. 04, 1879

Patent Pictures:
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