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| All Patents in class 184/50.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,031,948 | Jul. 09, 1912 | E. McCoy | Lubricator | steam engine lubricators | |
| 1,055,540 | Mar. 11, 1913 | E.A. Kelsey | Lubricator | lubricators | |
| 1,153,113 | Sep. 07, 1915 | L. Kassander | Sight Feed Lubricator for Locomotives | steam engine lubricators | |
| 1,676,473 | Jul. 10, 1928 | F.C. Blanchard | Lubricator | tool lubricators | |