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US Patent: 163,797
Device for Rounding the Ends of Bolts
Patentee:
James Nelson (exact or similar names) - Sunderland, Durham County, England

USPTO Classifications:
470/86, 82/128

Tool Categories:
specialty machines : nut or bolt making machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 12, 1874
Granted: May 25, 1875

Patent Pictures:
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