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US Patent: 2,703,455
Autoradial Engraving Device
Patentee: Edwin T. Green (exact or similar names) - Cambridge, Middlesex County, MA USPTO Classifications: 33/23.01, 409/86 Tool Categories: metalworking machines : metal engraving machines Assignees: None Manufacturer: Green Instrument Co. - Cambridge, Middlesex County, MA Witnesses: Unknown	Patent Dates: Applied: Apr. 08, 1950 Granted: Mar. 08, 1955 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Green Instrument Co.

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