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| All Patents in class 418/196 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 453,935 | Jun. 09, 1891 | W. Miessner, A. Miessner, C. Miessner | Rotary Steam Engine | ||
| 606,606 | Jun. 28, 1898 | J.J. Unbehend | Rotary Engine | ||
| 924,173 | Jun. 08, 1909 | C. Miller | Rotary Engine | ||
| 931,785 | Aug. 24, 1909 | C. Miller | Rotary Steam Engine | ||
| 1,093,796 | Apr. 21, 1914 | C. Miller | Rotary Engine | ||
| 1,460,875 | Jul. 03, 1923 | A. White | Rotary gear pump | ||
 | 1,861,168 | May 31, 1932 | J.H. Warren, E.C. Warren, W. Warren | Rotary Engine | |