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US Patent: 2,213,098
Pen for Recording Instruments
Patentee: Norman J. Smith (exact or similar names) - Medfield, Norfolk County, MA USPTO Classifications: 346/140.1 Tool Categories: industrial machines : industrial recording apparatus Assignees: Crosby Steam Gage & Valve Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 16, 1939 Granted: Aug. 27, 1940 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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