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US Patent: 3,142,006
Permanent Magnetic Chuck
Patentee: Clifford Stead (exact or similar names) - North Smithfield, Providence County, RI USPTO Classifications: 335/295 Tool Categories: metalworking machines : grinders : magnetic chucks Assignees: Taft-Peirce Mfg. Co. - Woonsocket, Providence County, RI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 07, 1960 Granted: Jul. 21, 1964 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Taft-Peirce Mfg. Co

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