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US Patent: 881,060
Valve
Patentee: John J. Cook (exact or similar names) - Medford, Middlesex County, MA USPTO Classifications: 137/468, 251/333, 285/331, 285/334.4, 285/910, 285/917 Tool Categories: hardware : valves industrial tools : industrial valves Assignees: Crosby Steam Gage & Valve Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 10, 1907 Granted: Mar. 03, 1908 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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