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US Patent: 1,685,866
Safety and Relief Valve
Patentee: Fairfield E. Raymond (exact or similar names) - Boston, Suffolk County, MA USPTO Classifications: 137/472, 137/478, 137/484.2 Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: Crosby Steam Gage & Valve Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 25, 1922 Granted: Oct. 02, 1928 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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