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| All Patents in class 418/9 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 562,843 | Jun. 30, 1896 | H.T. Morse | Rotary Engine | ||
| 3,100,450 | Aug. 13, 1963 | E.J. Svenson | Hydraulically Actuated Machine Tool | ||