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| All Patents in class 415/17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 249,274 | Nov. 08, 1881 | F.W. Tuerk, Jr. | Water Motor | hydraulic motors | |
| 1,496,005 | Jun. 03, 1924 | H.B. Lee | Apparatus for controlling boiler water feed | feedwater apparatus | |