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US Patent: 2,534,251
Automatic Valve
Patentee: Earnest J. Dillman (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 236/1C, 236/93A, 236/93R, 236/DIG.5 Tool Categories: industrial machines : industrial machine mechanisms : industrial control apparatus : temperature controls hardware : valves Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 23, 1946 Granted: Dec. 19, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Detroit Lubricator Co.

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