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| Patents for Maguler Butler | |||||
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| Number | Date | Patentee | Title | Type | |
| 524,112 | Aug. 07, 1894 | P.H. Knipper, J.G. Knipper | Lubricator | steam engine lubricators | |
| 564,503 | Jul. 21, 1896 | M. Butler | Lubricator | steam engine lubricators | |
| CA-54,333 | Dec. 11, 1896 | M. Butler | Graisseur | steam engine lubricators | |