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| All Patents in class 184/103.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,541,866 | Jun. 16, 1925 | M. Sorensen | Automatic Oil Feeding Apparatus | oil pumps | |
| 3,015,371 | Jan. 02, 1962 | E.C. Gits | Level Regulator | industrial machine lubrication | |