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| Patents for John E. Lonergan | |||||
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| Number | Date | Patentee | Title | Type | |
| 132,477 | Oct. 22, 1872 | J.E. Lonergan | Improvement in lubricators | oil cups | |
| RE9,164 | Apr. 20, 1880 | J.E. Lonergan | Lubricator | oil cups | |
| 256,229 | Apr. 11, 1882 | J.E. Lonergan | Oil-cup for steam-engines | oil cups | |
| 455,001 | Jun. 30, 1891 | J.E. Lonergan | Testing-yoke for safety-valves | steam safety valves | |
| 532,469 | Jan. 15, 1895 | J.E. Lonergan | Lubricator | oil cups | |