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US Patent: 2,190,464
Control Device
Patentee: David D. Wile (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 137/505.37, 251/64 Tool Categories: specialty machines : refrigeration apparatus industrial machines : industrial machine mechanisms : industrial control apparatus : flow controls Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 11, 1936 Granted: Feb. 13, 1940 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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