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| All Patents in class 415/116 | |||||
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| Number | Date | Patentee | Title | Type | |
| 100,238 | Feb. 22, 1870 | B.F. Sturtevant | Hot Air Blower | blowers | |
| 1,791,585 | Feb. 10, 1931 | C.A. Terry | Hydraulic Turbine | turbine water wheels | |
| 1,942,995 | Jan. 09, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels | |