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| All Patents in class 425/167 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,868,201 | Feb. 25, 1975 | R.A. Jackson, B.F. Janes | Powdered metal press | metalworking machines | |
| 4,828,474 | May 09, 1989 | R. Ballantyne | Hydraulic cylinder device for platen spacing indication and control | hydraulic metalworking presses | |