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US Patent: 2,149,409
Oscillating grinder
Patentees: Roger S. Pyne (exact or similar names) - Springfield, MA Byron F. Stowell (exact or similar names) - Springfield, MA Frederick D. Van Norman (exact or similar names) - Springfield, MA USPTO Classifications: 451/1, 451/17, 451/18, 451/227 Tool Categories: metalworking machines : grinders Assignees: Van Norman Machine Tool Co. - Springfield, MA Manufacturer: Van Norman Machine Tool Co. - Springfield, MA Witnesses: Unknown	Patent Dates: Applied: Aug. 12, 1936 Granted: Mar. 07, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Van Norman Machine Tool Co.

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