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| All Patents in class 425/450.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,344,470 | Oct. 03, 1967 | R.A. Hufford | Simultaneously Closing Blow Molding Machine | ||
 | 4,759,280 | Jul. 26, 1988 | L. Malashenko | Hydraulic press with adjustable platen clearance | |
 | 5,088,400 | Feb. 18, 1992 | A. Ferguson | Adjusting press platen clearance | |
 | 5,237,916 | Aug. 24, 1993 | L. Malashenko | Regenerative hydraulic cylinders with internal flow paths | |