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CA Patent: CA-6,874
Improvements on Railroad Locomotives Perfectionnements Aux Locomotives de Railroutes
Patentee: Henry George Ashton (exact or similar names) - Boston, Suffolk County, MA USPTO Classifications: Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: None Manufacturer: Ashton Valve Co. - Boston, Middlesex County, MA Witnesses: J. E. Knox George O. Joule	Patent Dates: Applied: Nov. 07, 1876 Granted: Dec. 12, 1876 Patent Pictures: [ 1 | 2 ] CIPO Data Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ashton Valve Co.

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