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US Patent: 4,671
Making Wood Screws
Patentee:
Smith Groom (exact or similar names) - Troy, Rensselaer County, NY

USPTO Classifications:
408/36

Tool Categories:
metalworking machines : screw machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jul. 28, 1846

Patent Pictures:
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