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FR Patent: FR-734,156
Appareil à Rectifier les Sièges de Soupape Valve Seat Grinding Device
Patentee: Hall Mfg. Co. (exact or similar names) - Toledo, Lucas County, OH USPTO Classifications: Tool Categories: trade specific : vehicle repairer : vehicle mechanic : valve and seat maintenance Assignees: Hall Manufacturing Co. - Toledo, Lucas County, OH Manufacturer: Hall Manufacturing Co. - Toledo, Lucas County, OH Witnesses: Unknown	Patent Dates: Applied: Mar. 24, 1932 Granted: Oct. 17, 1932 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hall Manufacturing Co.

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