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US Patent: 2,481,183
Pump Priming Means
Patentee: Henry R. Welby (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 251/228, 417/443, 417/568 Tool Categories: industrial machines : pumps : reciprocating pumps industrial machines : pumps : pump unloaders Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 30, 1946 Granted: Sep. 06, 1949 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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