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| Patents for Richard A. Hufford | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 3,241,185 | Mar. 22, 1966 | R.A. Hufford | Extruder with means to vary ram pressure | |
| 3,344,470 | Oct. 03, 1967 | R.A. Hufford | Simultaneously Closing Blow Molding Machine | ||