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US Patent: 3,287,859
Rotatable grinding and surfacing tool
Patentee: Treffle J. Leveque (exact or similar names) - Detroit, MI USPTO Classifications: 451/271, 451/357, 451/359 Tool Categories: handheld power tools : handheld power sanders woodworking machines : sanding machines : handheld power sanders Assignees: Rockwell Mfg. Co. - Pittsburgh, PA Manufacturer: Rockwell Mfg. Co. - Pittsburgh, PA Witnesses: Unknown	Patent Dates: Applied: Aug. 23, 1965 Granted: Nov. 29, 1966 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Rockwell Mfg. Co. Vintage Machinery entry for Porter-Cable Machine Co.
Description: This invention—an orbital mechanism—was originally part of the application that became patent 3,205,622.

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