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US Patent: 161,311
Screw-Threading Die
Patentee: Frederic E. Wells (exact or similar names) - Greenfield, Franklin County, MA USPTO Classifications: 408/162, 408/239R Tool Categories: metalworking tools : taps and dies Assignees: Wiley & Russell Manufacturing Co. - Greenfield, Franklin County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 11, 1874 Granted: Mar. 23, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Wiley & Russell Manufacturing Co.

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