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| All Patents in class 74/5.12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 894,838 | Aug. 04, 1908 | F.M. Leavitt | Gyroscopic steering-gear for torpedoes | torpedoes | |
| 925,710 | Jun. 22, 1909 | F.M. Leavitt | Steering mechanism for torpedoes | torpedoes | |
| 1,291,031 | Jan. 14, 1919 | F.M. Leavitt | Gyroscope-spinning mechanism | torpedoes | |