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US Patent: 1,777,380
Thread-cutting die
Patentee: Albert J. Prance (exact or similar names) - Detroit, MI USPTO Classifications: 408/142, 408/172 Tool Categories: metalworking machines : drilling and boring : tapping heads and chucks Assignees: Murchey Machine & Tool Co. - Detroit, MI Manufacturer: Murchey Machine & Tool Co. - Detroit, MI Witnesses: Unknown	Patent Dates: Applied: Mar. 03, 1928 Granted: Oct. 07, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Murchey Machine & Tool Co.

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