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| All Patents in class 415/24 | |||||
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| Number | Date | Patentee | Title | Type | |
| 31,217 | Jan. 29, 1861 | G.W. Armstrong | Water Wheel | water wheels | |
| 1,955,549 | Apr. 17, 1934 | J.T. Janette | Combined pump and valve | water heaters | |