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US Patent: 1,812,369
Projecting Mechanism and Gear Staging Device
Patentees: Russell W. Porter (exact or similar names) - Springfield, Windsor County, VT Robert O. Beardsley (exact or similar names) - Springfield, Windsor County, VT USPTO Classifications: 33/501.17 Tool Categories: metalworking machines : gear measuring machines Assignees: Jones & Lamson Machine Co. - Springfield, Windsor County, VT Manufacturer: Jones & Lamson Machine Co. - Springfield, Windsor County, VT Witnesses: Unknown	Patent Dates: Applied: May 03, 1923 Granted: Jun. 30, 1931 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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