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US Patent: 1,922,202
Cylinder Working Tool
Patentees: Ernest A. Hall (exact or similar names) - Toledo, Lucas County, OH William E. Heuer (exact or similar names) - Toledo, Lucas County, OH USPTO Classifications: 74/518, 74/524 Tool Categories: metalworking tools : honing tools trade specific : vehicle repairer : vehicle mechanic : cylinder maintenance Assignees: None Manufacturer: Hall Manufacturing Co. - Toledo, Lucas County, OH Witnesses: Unknown	Patent Dates: Applied: Feb. 25, 1932 Granted: Aug. 15, 1933 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hall Manufacturing Co.

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