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| Patents for Rudolf M. Ostermann | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,583,090 | May 04, 1926 | R.M. Ostermann | Injector | water injectors | |
| 1,583,363 | May 04, 1926 | R.M. Ostermann | Injector | water injectors | |