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| All Patents in class 184/51 | |||||
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| Number | Date | Patentee | Title | Type | |
| 372,764 | Nov. 08, 1887 | J.W. Powell | Lubricator | oil cups | |
| 379,243 | Mar. 13, 1888 | J. Powell | Lubricator | oil cups | |
| 383,746 | May 29, 1888 | E. McCoy | Lubricator | steam engine lubricators | |
| 403,695 | May 21, 1889 | J. Powell | Lubricator | oil pumps | |
| 465,679 | Dec. 22, 1891 | N. Seibert | Lubricator | lubricators | |
| 465,875 | Dec. 29, 1891 | E. McCoy | Lubricator | steam engine lubricators | |