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| All Patents in class 417/188 | |||||
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| Number | Date | Patentee | Title | Type | |
| 368,798 | Aug. 23, 1887 | E. Ware | Injector | water injectors | |
| 497,269 | May 09, 1893 | T.M. Eynon | Injector | water injectors | |
| 1,111,343 | Sep. 22, 1914 | W.E. Wollheim | Jet Pump Apparatus | steam pumps | |
| 1,133,601 | Mar. 30, 1915 | R. Wood | Ejecting Device | feedwater apparatus | |
| 1,583,363 | May 04, 1926 | R.M. Ostermann | Injector | water injectors | |
| 2,151,658 | Mar. 21, 1939 | B.E. Folke | Injector | water injectors | |
| 2,248,249 | Jul. 08, 1941 | I.P. Pedrick | Injector | water injectors | |