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US Patent: 2,226,446
Process for treating thermoplastic products
Patentees:
Graydon Smith (exact or similar names) - Cambridge, MA
Albert Allen (exact or similar names) - Sharon, MA

USPTO Classifications:
219/618, 219/647, 219/670

Tool Categories:
specialty machines : plastic molding machines

Assignees:
Reed-Prentice Corp. - Worcester, MA

Manufacturer:
Reed-Prentice Corp. - Worcester, MA

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 23, 1937
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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