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| All Patents in class 184/7.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,307,734 | Jun. 24, 1919 | A.V. Gullborg | Lubricating Means | oil cups | |
| 2,315,778 | Apr. 06, 1943 | B.E. Folke | Lubricating System | steam engine lubricators | |