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US Patent: 153,804
Lathe Attachments for Cutting Screw Taps
Patentee: Henry E. Boyd (exact or similar names) - McKeesport, Allegheny County, PA USPTO Classifications: 409/70, 76/117, 82/19 Tool Categories: metalworking machines : metal lathes : metal lathe accessories and attachments metalworking machines : metal threading machines Assignees: Henry E. Boyd - McKeesport, Allegheny County, PA James Wool - McKeesport, Allegheny County, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 07, 1874 Granted: Aug. 04, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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