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DE Patent: DE-13,446
Neuerungen an Sicherheitsventilen für Dampfkessel Innovations in safety valves for steam boilers
Patentee: Henry George Ashton (exact or similar names) - Somerville, Middlesex 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: none listed	Patent Dates: Granted: Oct. 03, 1880 Patent Pictures: [ 1 | 2 | 3 ] Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ashton Valve Co.

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