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| All Patents in class 241/240 | |||||
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| Number | Date | Patentee | Title | Type | |
| FX-7,196 | Aug. 09, 1832 | O. Badger, O. Sull (Lull) | Double hydrostatic oil-press | ||
| 4,024 | May 01, 1845 | H.A. Pitts | Cutting and Crushing Corn | corn grinders | |
| 190,614 | May 08, 1877 | J.H. Pendleton | Coffee Huller | coffee hullers | |
| 1,436,208 | Nov. 21, 1922 | C.B. Sprague | Sawmill hog | wood grinding machines | |