| All Patents in class 123/41R |
Patents 31 -
39
of 39
      |
| Number | Date | Patentee | Title | Type |
| 909,728 | Jan. 12, 1909 | F.V. Hart, E.E. Winkley | Hydrocarbon Motor | gas and gasoline engines |
| 1,019,856 | Mar. 12, 1912 | J.L. Strickland | Rotary internal-combustion engine | internal combustion engines |
| 1,128,208 | Feb. 09, 1915 | F.V. Hart, E.E. Winkley | Hydrocarbon Motor | gas and gasoline engines |
| 1,576,549 | Mar. 16, 1926 | O.L. Riegels | Engine-starting device | motor vehicles |
| 1,834,125 | Dec. 01, 1931 | M.J. Goldberg | Engine Timing Means | fuel injection apparatus |
| 2,007,246 | Jul. 09, 1935 | S.A. Ciechanow, M.J. Goldberg | Fuel Control Means for Internal Combustion Engines | fuel injection apparatus |
| 2,035,096 | Mar. 24, 1936 | H. Schneider | Engine Accessory Drive | internal combustion engines |
| 2,292,104 | Aug. 04, 1942 | H. Davids | Reversible Opposed Piston Engine | opposed piston engines |
| 3,561,407 | Feb. 09, 1971 | J.H. Davids, A.K. Antonsen, M.L. Foreman | Reversible Internal Combustion Engine Having Improved Fuel Control Means | fuel pumps |
