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US Patent: 1,593,542
Device for Cleaning Scale from Atmospheric Condenser Pipes
Patentee: Samuel D. Shoemaker (exact or similar names) - Portsmouth, Scioto County, OH USPTO Classifications: 15/104.0436 Tool Categories: specialty tools : pipe and orifice cleaners Assignees: Samuel D. Shoemaker - Portsmouth, Scioto County, OH George W. Sheppard - Portsmouth, Scioto County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 15, 1924 Granted: Jul. 20, 1926 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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