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| All Patents in class 425/170 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,350,539 | Jun. 06, 1944 | G. Smith | Automatic temperature control for injection molding machines | plastic molding machines | |
| 3,222,717 | Dec. 14, 1965 | R.P. Hyland, S. Saslawsky | Blow molding system | blow molding machines | |