| Patents for James Leffel & Co. |
Patents 16 -
30
of 40
      |
| Number | Date | Patentee | Title | Type |
| 1,931,158 | Oct. 17, 1933 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,942,589 | Jan. 09, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,942,995 | 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 |
| 1,950,773 | Mar. 13, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,950,774 | Mar. 13, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,950,775 | Mar. 13, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,950,776 | Mar. 13, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,950,777 | Mar. 13, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,954,192 | Apr. 10, 1934 | G.A. Biggs | Valve | water valves |
| 1,954,193 | Apr. 10, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,954,194 | Apr. 10, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,962,380 | Jun. 12, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 1,962,381 | Jun. 12, 1934 | G.A. Biggs | Vacuum Breaker | turbine water wheels |
| 1,962,382 | Jun. 12, 1934 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
