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| All Patents in class 89/41.01 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,414X | Apr. 26, 1826 | E. Hidden | Elevating screw box and cap of carronades | ||
| 5,748X | Dec. 08, 1829 | W.H. Bell, L. Bell | Machine for elevating heavy guns | ||
| 2,404,127 | Jul. 16, 1946 | H. Ernst | Sensitive Control Mechanism | naval guns | |