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Patents for James Leffel & Co.
Patents 16 - 30 of 40
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NumberDatePatenteeTitleType
1,931,158Oct. 17, 1933G.A. BiggsHydraulic Turbineturbine water wheels
1,942,589Jan. 09, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,942,995Jan. 09, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,948,478Feb. 20, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,950,773Mar. 13, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,950,774Mar. 13, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,950,775Mar. 13, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,950,776Mar. 13, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,950,777Mar. 13, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,954,192Apr. 10, 1934G.A. BiggsValvewater valves
1,954,193Apr. 10, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,954,194Apr. 10, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,962,380Jun. 12, 1934G.A. BiggsHydraulic Turbineturbine water wheels
1,962,381Jun. 12, 1934G.A. BiggsVacuum Breakerturbine water wheels
1,962,382Jun. 12, 1934G.A. BiggsHydraulic Turbineturbine water wheels
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