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US Patent: 2,652,664
Operator-controlled Grinding Machine With Optical Comparator
Patentees: James A. Allan (exact or similar names) - Springfield, Windsor County, VT Francis C. Savage (exact or similar names) - Columbia, Tolland County, CT USPTO Classifications: 451/124, 451/221, 451/237, 451/6 Tool Categories: metalworking machines : grinders : profile and contour grinders metalworking tools : machinist tools : measuring tools : comparators Assignees: Jones & Lamson Machine Co. - Springfield, Windsor County, VT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 18, 1952 Granted: Sep. 22, 1953 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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