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| All Patents in class 415/117 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 20,921 | Jul. 13, 1858 | D.K. Kraatz | Turbine Water Wheel | ||
| RE3,875 | Mar. 08, 1870 | D.K. Kraatz | Turbine Water Wheel | ||
| 117,655 | Aug. 01, 1871 | J. McGowan | Improvement in Steam and Water-Jet Rotary Engines | ||
| 448,621 | Mar. 17, 1891 | G.J. Altham | Art of Obtaining Motive Power | ||
| 521,713 | Jun. 19, 1894 | G.M. Hopkins | Turbine | ||
| 585,601 | Jun. 29, 1897 | H.B. Steele | Gas Engine | ||
| 716,765 | Dec. 23, 1902 | C.E. Sargent | Steam Turbine | ||
| 1,962,381 | Jun. 12, 1934 | G.A. Biggs | Vacuum Breaker | ||