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US Patent: 2,578,531
Machine for Grinding Impeller Bucket Shanks
Patentees: Ernest V. Flanders (exact or similar names) - Springfield, Windsor County, VT Carroll H. Drury (exact or similar names) - Springfield, Windsor County, VT USPTO Classifications: 416/193A, 451/14, 451/200, 451/365 Tool Categories: metalworking machines : grinders : profile and contour grinders Assignees: Jones & Lamson Machine Co. - Springfield, Windsor County, VT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 14, 1948 Granted: Dec. 11, 1951 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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