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| Patents for Johann Stumpf | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,044,828 | Nov. 19, 1912 | J. Stumpf | Distribution-valve for steam-engines | steam engine valves | |
| 1,568,197 | Jan. 05, 1926 | J. Stumpf | Locomotive with combined drive | railroad locomotives | |