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US Patent: 711,398
Fluid Operated Stop Valve and Alarm
Patentee: Bengt M. W. Hanson (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 116/67R, 137/558, 251/116, 251/74 Tool Categories: hardware : valves Assignees: Pratt & Whitney Co. - Hartford, Hartford County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 23, 1901 Granted: Oct. 14, 1902 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pratt, Whitney & Co.

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