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| All Patents in class 415/144 | |||||
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| Number | Date | Patentee | Title | Type | |
| 580,098 | Apr. 06, 1897 | H.D. Williams | Governor for Water Motors | water wheel governors | |
| 1,949,993 | Mar. 06, 1934 | J.Y. Dahlstrand | Unit Heater | heaters | |
| 1,950,777 | Mar. 13, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels | |
| 1,977,036 | Oct. 16, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels | |
| 2,623,466 | Dec. 30, 1952 | W.H. Tinker | Dual Discharge Pump | rotary pumps | |