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CA Patent: CA-3,964
Safety Valve Soupape de Surete
Patentee: Edward Halliday Ashcroft (exact or similar names) - Lynn, Essex County, MA USPTO Classifications: Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 25, 1874 Granted: Oct. 16, 1874 Patent Pictures: CIPO Data Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ashcroft Mfg. Co.

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