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US Patent: 3,489,286
Hydrocyclone separator with particle trap
Patentee: Mark R. Estabrook (exact or similar names) - Rockford, IL USPTO Classifications: 209/733, 210/512.1 Tool Categories: specialty machines : separators Assignees: Barnes Drill Co. - Rockford, IL Manufacturer: Barnes Drill Co. - Rockford, IL Witnesses: Unknown	Patent Dates: Applied: Jul. 01, 1968 Granted: Jan. 13, 1970 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Barnes Drill Co.

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