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| Patents for Stephen A. Hasbrouck | |||||
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| Number | Date | Patentee | Title | Type | |
| 624,649 | May 09, 1899 | S.A. Hasbrouck | Convertible Compound Explosive Engine | internal combustion engine valves | |
| 654,894 | Jul. 31, 1900 | S.A. Hasbrouck | Regulator for Gasolene or Other Like Engines | fuel systems | |