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US Patent: 1,743,604
Adapter for Segmental Abrasive Wheels
Patentee: Frank O. Hoagland (exact or similar names) - Bridgeport, Fairfield County, CT USPTO Classifications: 451/548 Tool Categories: metalworking machines : grinders : grinder wheels Assignees: Pratt & Whitney Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 05, 1926 Granted: Jan. 14, 1930 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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