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| All Patents in class 100/269.01 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 38,606 | May 19, 1863 | C.E. Rymes | Improvement in hydraulic presses | |
 | 43,912 | Aug. 23, 1864 | M. Hittinger | Improvement in hydraulic presses | |
| 1,336,171 | Apr. 06, 1920 | R.A. Trace | Means for forming oil-cakes | ||
| 1,861,337 | May 31, 1932 | W. Ernst | Hydraulic Metal Drawing Press | ||