| All Patents in class 290/1R |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 436,936 | Sep. 23, 1890 | J.W. Eisenhuth | Explosive Engine | |
| 468,451 | Feb. 09, 1892 | J. Hunt | Magneto-electric machine | mining apparatus |
| 585,651 | Jul. 06, 1897 | F. Burger | Gas Engine | gas and gasoline engines |
| 702,895 | Jun. 17, 1902 | C.O. White | Sparking Device | ignition systems |
| 880,974 | Mar. 03, 1908 | A.N. Classon | Gas-engine igniter | ignition systems |
| 1,803,543 | May 05, 1931 | P. Brown | Magneto | ignition systems |
| 2,123,358 | Jul. 12, 1938 | F.P. Grutzner | Engine Silencing Hood | mufflers |
| 2,213,682 | Sep. 03, 1940 | A.K. Antonsen | Power Plant and Engine Arrangement | power plants |
| 2,896,139 | Jul. 21, 1959 | A. Axelrod | Electromechanical transducer for controlling a tuning condenser in an oscillator circuit | electrical devices |
