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| Patents for Oscar Mueller | |||||
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| Picture | Number | Date | Patentee | Title | |
| 582,540 | May 11, 1897 | O. Mueller | Igniter for Explosive Engines | ||
 | 628,110 | Jul. 04, 1899 | O. Mueller | Tapping-machine | |
 | 649,173 | May 08, 1900 | H. Mueller | Tapping-machine | |
 | 660,760 | Oct. 30, 1900 | O. Mueller | Tapping-machine | |