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US Patent: 2,143,229
Control Device
Patentee: Philip S. Russel (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 137/115.13, 137/494, 210/137, 210/422, 210/452, 417/279, 417/311 Tool Categories: industrial machines : industrial machine mechanisms : industrial control apparatus industrial tools : pressure regulators Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 05, 1937 Granted: Jan. 10, 1939 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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