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US Patent: 2,436,528
Screw Thread Gauge
Patentees: Louis F. Polk (exact or similar names) - Dayton, OH Willis Fay Aller (exact or similar names) - Dayton, OH USPTO Classifications: 33/199R Tool Categories: metalworking tools : machinist tools : measuring tools : thread gages layout tools : measurement gauges Assignees: The Sheffield Corp. - Dayton, OH Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Nov. 10, 1844 Granted: Feb. 24, 1948 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Edward T. Noe jr. - patent attorney

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