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US Patent: 1,536,734
Bevel Gear Testing Device
Patentee: Hubert D. Tanner (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 33/501.17, 33/804 Tool Categories: metalworking machines : gear measuring machines Assignees: Pratt & Whitney Co. - Hartford, Hartford County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 18, 1921 Granted: May 05, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pratt, Whitney & Co.

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