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| All Patents in class 416/157A | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,948,478 | Feb. 20, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels | |
| 1,962,385 | Jun. 12, 1934 | G.A. Biggs | Hydraulic Turbine Runner | turbine water wheels | |