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US Patent: 2,525,596
Optical Projection Screen
Patentee: Robert R. Finn (exact or similar names) - Springfield, Windsor County, VT USPTO Classifications: 359/446, 359/449, 359/454 Tool Categories: 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: Jan. 21, 1949 Granted: Oct. 10, 1950 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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