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| All Patents in class 417/169 | |||||
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| Number | Date | Patentee | Title | Type | |
| 185,861 | Jan. 02, 1877 | J.T. Hancock | Inspirator | feedwater apparatus | |
| 334,852 | Jan. 26, 1886 | A.S. Eberman | Injector | water injectors | |
| 361,148 | Apr. 12, 1887 | A.S. Eberman | Injector | water injectors | |
| 436,601 | Sep. 16, 1890 | P.P. Hogue | Injector | water injectors | |
| 440,624 | Nov. 18, 1890 | A.S. Eberman | Injector | water injectors | |