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US Patent: 3,540,588
Method and Apparatus for Cleaning Liquid
Patentee: Mark R. Estabrook (exact or similar names) - Rockford, Winnebago County, IL USPTO Classifications: 210/195.1, 210/526, 210/788, 210/805 Tool Categories: Assignees: Barnes Drill Co. - Rockford, Winnebago County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 13, 1967 Granted: Nov. 17, 1970 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Barnes Drill Co.

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