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US Patent: 1,927,007
Grinding machine
Patentee: Joseph R. Whittles (exact or similar names) - Rockford, IL USPTO Classifications: 451/213, 451/340 Tool Categories: Assignees: Mattison Machine Works - Rockford, IL Manufacturer: Mattison Machine Works - Rockford, IL Witnesses: Unknown	Patent Dates: Applied: Mar. 26, 1931 Granted: Sep. 12, 1933 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Mattison Machine Works

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