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US Patent: 308,639
Lathe Mandrel
Patentee:
Horace L. Stevens (exact or similar names) - Erie, Erie County, PA

USPTO Classifications:
384/249, 403/290, 403/344, 451/398, 82/169

Tool Categories:
metalworking tools : mandrels and arbors

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 09, 1884
Granted: Dec. 02, 1884

Patent Pictures:
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