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| All Patents in class 418/177 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 40,571 | Nov. 10, 1863 | A. Millochau | Rotary Steam Engine | ||
 | 155,722 | Oct. 06, 1874 | L.D. Green | Improvement in rotary pumps | |
 | 172,424 | Jan. 18, 1876 | L.D. Green | Improvement in rotary pumps | |
| 461,130 | Oct. 13, 1891 | F. Meyer | Rotary Engine | ||
| 461,161 | Oct. 13, 1891 | A. Grant, J.S. Kiehl, F. Meyer | Rotary Steam Engine | ||
| 575,517 | Jan. 19, 1897 | J.D. Blagden | Rotary Gas Engine | ||