| All Patents in class 415/201 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 667 | Apr. 02, 1838 | O. Wright, A.A. Wright | Rotary steam-engine | rotary steam engines |
| 71,461 | Nov. 26, 1867 | A.H. Crozier | Improvement in water-wheels | water wheels |
| 110,796 | Jan. 03, 1871 | W. Snyder | Improvement in hydraulic engines | water wheels |
| 565,772 | Aug. 11, 1896 | W.J. Mingle, T. Bemis | Water-motor fan | fans |
| 900,966 | Oct. 13, 1908 | G. Sulzer | Centrifugal Pump | rotary pumps |
| 2,122,235 | Jun. 28, 1938 | L.D. Millard | Turbine | steam turbines |
| 2,265,758 | Dec. 09, 1941 | M.M. Klosson | Pump | rotary pumps |
| 3,871,795 | Mar. 18, 1975 | R.T. Habdo, W.P. Burger | Fan construction | |
