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US Patent: 1,392,313
Screw Thread Gage
Patentee: Galvin S. Fallow (exact or similar names) - Wethersfield, CT USPTO Classifications: 33/199R, 33/829, 33/DIG.1 Tool Categories: layout tools : special purpose gauges Assignees: Pratt & Whitney Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Mar. 16, 1918 Granted: Oct. 04, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pratt, Whitney & Co.
Description: S. J. Teller - patent attorney

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