| All Patents in class 418/255 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 8,423X | Sep. 30, 1834 | G.G. (Hurmance) | Water wheel to propel machinery | water wheels |
| 11,909 | Nov. 07, 1854 | C. Rumley | Rotary Steam Engine | rotary steam engines |
| 33,550 | Oct. 22, 1861 | B.F. Taber | Improvement in rotary pumps | pumps |
| 98,811 | Jan. 11, 1870 | S.M. Snyder | Improvement in rotary engines | rotary steam engines |
| 118,366 | Aug. 22, 1871 | C.A. Hege | Improvement in rotary steam-engines | rotary steam engines |
| 986,502 | Mar. 14, 1911 | A.C. Roessler | Rotary compressor | air compressors |
