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US Patent: 2,278,951
Illuminated Dial Instrument
Patentees: Norman J. Smith (exact or similar names) - Medfield, Norfolk County, MA Walter L. Thomas (exact or similar names) - Lynn, Essex County, MA USPTO Classifications: 362/216, 362/23.01, 439/228, 439/235, 62/23.18, 968/213 Tool Categories: industrial machines : industrial recording apparatus gauges : gauge illuminating apparatus Assignees: Crosby Steam Gage & Valve Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 23, 1939 Granted: Apr. 07, 1942 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Crosby Steam Gage & Valve Co.

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