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US Patent: 2,002,971
Reamer sharpener
Patentee: Herman W. Zimmerman (exact or similar names) - Chicago, IL USPTO Classifications: 125/11.03, 451/141, 451/150, 451/374 Tool Categories: metalworking machines : drilling and boring : drill bits : reamers trade specific : vehicle repairer : vehicle mechanic Assignees: Automotive Maintenance Machinery Co. - Chicago, IL Manufacturer: Automotive Maintenance Machinery Co. - North Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Jul. 30, 1932 Granted: May 28, 1935 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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