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| All Patents in class 417/175 | |||||
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| Number | Date | Patentee | Title | Type | |
| 554,401 | Feb. 11, 1896 | T.J. Sweeney | Injector | water injectors | |
| 677,866 | Jul. 09, 1901 | W.T. Harris | Apparatus for Returning Exhaust Steam to Steam Boilers | steam pumps | |
| 738,822 | Sep. 15, 1903 | C. Linstrom | Injector | steam pumps | |
| 1,145,683 | Jul. 06, 1915 | C.R. Heath | Locomotive Injector Attachment | steam pumps | |
| 1,441,301 | Jan. 09, 1923 | H.F. Schmidt | Hot Well Ejector | air compressors | |
| 1,571,406 | Feb. 02, 1926 | J.M. González | Injector | water injectors | |