| Patents for Harry C. Clay |
Patents 31 -
45
of 57
      |
| Number | Date | Patentee | Title | Type |
| 904,602 | Nov. 24, 1908 | H.C. Clay | Centrifugal Governor | traction engine governors |
| 911,703 | Feb. 09, 1909 | H.C. Clay | Gang Plow | traction engine accessories |
| 969,746 | Sep. 06, 1910 | H.C. Clay | Boiler | traction engine boilers |
| 972,162 | Oct. 11, 1910 | H.C. Clay | Mechanical Movement | mechanical movements |
| 976,721 | Nov. 22, 1910 | H.C. Clay | Gang Plow | traction engine accessories |
| 989,521 | Apr. 11, 1911 | H.C. Clay | Generator Driver | industrial machine shaft couplings |
| 993,292 | May 23, 1911 | H.C. Clay | Oil Pump | oil pumps |
| 1,015,005 | Jan. 16, 1912 | H.C. Clay | Sparking Apparatus for Internal Combustion Engines | magnetos |
| 1,066,997 | Jul. 08, 1913 | H.C. Clay | Transmission Gearing for Traction Engines | traction engine propulsion components |
| 1,072,824 | Sep. 09, 1913 | H.C. Clay | Power Steering Gear for Traction Engines | traction engine steering apparatus |
| 1,155,795 | Oct. 05, 1915 | H.C. Clay | Scarifier | scarifiers |
| 1,253,787 | Jan. 15, 1918 | H.C. Clay | Clutch | industrial machine clutches |
| 1,288,838 | Dec. 24, 1918 | H.C. Clay | Baling Press | hay or straw presses |
| 1,357,275 | Nov. 02, 1920 | H.C. Clay | Separator | corn and grain separators |
| 1,425,631 | Aug. 15, 1922 | H.C. Clay | Valve Gear Mechanism | traction engine valve gear |
