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| All Patents in class 210/314 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 128,594 | Jul. 02, 1872 | A.N. Cole | Improvement in apparatus for separating oil from cotton-waste, &c. | |
| 1,644,728 | Oct. 11, 1927 | C.B. Jahnke | Oil Filter | ||