| All Patents in class 290/1R |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
| | 436,936 | Sep. 23, 1890 | J.W. Eisenhuth | Explosive Engine |
 | 468,451 | Feb. 09, 1892 | J. Hunt | Magneto-electric machine |
| | 585,651 | Jul. 06, 1897 | F. Burger | Gas Engine |
| | 702,895 | Jun. 17, 1902 | C.O. White | Sparking Device |
 | 880,974 | Mar. 03, 1908 | A.N. Classon | Gas-engine igniter |
 | 1,338,721 | May 04, 1920 | A.Y. Edwards | Internal-Combustion Engine |
 | 1,803,543 | May 05, 1931 | P. Brown | Magneto |
| | 2,123,358 | Jul. 12, 1938 | F.P. Grutzner | Engine Silencing Hood |
| | 2,213,682 | Sep. 03, 1940 | A.K. Antonsen | Power Plant and Engine Arrangement |
| | 2,896,139 | Jul. 21, 1959 | A. Axelrod | Electromechanical transducer for controlling a tuning condenser in an oscillator circuit |
