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| All Patents in class 415/163 | |||||
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| Number | Date | Patentee | Title | Type | |
| 925,839 | Jun. 22, 1909 | A. Reid | Gate-controlling mechanism for water-wheels | water wheels | |
| 955,569 | Apr. 19, 1910 | W.W. White | Gate-controlling mechanism for water-wheels | water wheels | |
| 1,942,589 | Jan. 09, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels | |
| 1,948,478 | Feb. 20, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels | |