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US Patent: 278,896
Nut Arbor
Patentee: Patrick Duffy (exact or similar names) - New Bedford, Bristol County, MA USPTO Classifications: 470/206 Tool Categories: metalworking tools : mandrels and arbors Assignees: Patrick Duffy - New Bedford, Bristol County, MA James F. Powers - New Bedford, Bristol County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 06, 1883 Granted: Jun. 05, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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