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US Patent: 2,226,448
Magnetic field structure
Patentee: Graydon Smith (exact or similar names) - Cambridge, MA USPTO Classifications: 219/630, 219/660, 219/672, 425/174, 425/547, 65/DIG.004 Tool Categories: specialty machines : plastic molding machines Assignees: Reed-Prentice Corp. - Worcester, MA Manufacturer: Reed-Prentice Corp. - Worcester, MA Witnesses: Unknown	Patent Dates: Applied: Mar. 01, 1939 Granted: Dec. 24, 1940 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Reed-Prentice Corp.

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