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| Patents for John Stumpf | |||||
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| Number | Date | Patentee | Title | Type | |
| 553,878 | Feb. 04, 1896 | J. Stumpf | Valve-motion for pumps | pumps | |
| 578,950 | Mar. 16, 1897 | J. Stumpf | Pump | pumps | |
| 603,475 | May 03, 1898 | J. Stumpf | Cut-off mechanism for steam-engines | steam engine valves | |