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US Patent: 2,001,375
Safety Valve
Patentee: Harry S. Baker (exact or similar names) - Arlington, Middlesex County, MA USPTO Classifications: 137/472, 137/475, 137/543.23 Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: Ashton Valve Co. - Cambridge, Middlesex County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 22, 1930 Granted: May 14, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ashton Valve Co.

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