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US Patent: 1,843,068
Valve
Patentees: Adolf Von Wangenheim (exact or similar names) - Detroit, Wayne County, MI Ragnar Gradhe (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 137/507, 137/510, 184/76, 92/103M, 92/99 Tool Categories: industrial tools : industrial valves hardware : valves industrial machines : industrial machine mechanisms : industrial machine lubrication Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 08, 1927 Granted: Jan. 26, 1932 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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