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US Patent: 2,493,297
Orifice Cleaning Means
Patentee: Walter S. Landon (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 137/238, 137/400, 137/94, 236/99H, 236/99R, 251/57, 251/65, 431/32, 431/62, 431/64 Tool Categories: specialty tools : pipe and orifice cleaners 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: Jul. 09, 1945 Granted: Jan. 03, 1950 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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