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US Patent: 2,309,496
Heating apparatus for injection molding machines
Patentees: Edward Stockton Bird (exact or similar names) - Worcester, MA Leon F. Marsh (exact or similar names) - Hudson, MA Graydon Smith (exact or similar names) - Cambridge, MA USPTO Classifications: 219/243, 219/478, 219/480, 264/DIG.046, 425/144, 425/543, 425/548 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. 02, 1939 Granted: Jan. 26, 1943 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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