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US Patent: 1,991,340
Pumping Means
Patentee: Adolf Von Wangenheim (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 184/27.2, 417/458, 417/521 Tool Categories: industrial tools : tool lubricators : oil pumps Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 18, 1931 Granted: Feb. 12, 1935 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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