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| All Patents in class 417/458 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,991,340 | Feb. 12, 1935 | A. Von Wangenheim | Pumping Means | oil pumps | |
| 2,863,396 | Dec. 09, 1958 | C.T. Heintz | Lubricating pump device | industrial machine lubrication | |