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US Patent: 2,981,038
Method of Grinding Helical Forms
Patentee: Ernest V. Flanders (exact or similar names) - Springfield, Windsor County, VT USPTO Classifications: 125/11.04, 451/246, 451/250, 451/48 Tool Categories: metalworking machines : grinders : thread grinders Assignees: Jones & Lamson Machine Co. - Springfield, Windsor County, VT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 17, 1959 Granted: Apr. 25, 1961 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Jones, Lamson & Co.

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