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US Patent: 1,957,485
Cylinder grinding tool adjusting mechanism
Patentee: Herman W. Zimmerman (exact or similar names) - Chicago, IL USPTO Classifications: 451/150, 451/440, 451/475 Tool Categories: specialty tools : automotive tools trade specific : vehicle repairer : vehicle mechanic : cylinder maintenance Assignees: Automotive Maintenance Machinery Co. - Chicago, IL Manufacturer: Automotive Maintenance Machinery Co. - North Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Nov. 02, 1928 Granted: May 08, 1934 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Automotive Maintenance Machinery Co. (AMMCO)

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