| All Patents in class 123/90.32 |
Patents 16 -
20
of 20
      |
| Number | Date | Patentee | Title | Type |
| 740,571 | Oct. 06, 1903 | G. Joranson | Gas Engine | internal combustion engine valves |
| 887,502 | May 12, 1908 | W.J. McVicker | Internal Combustion Engine | internal combustion engine valves |
| 927,582 | Jul. 13, 1909 | W.J. McVicker | Mechanism for Controlling the Operation of Internal Combustion Engines | internal combustion engine governors |
| 953,460 | Mar. 29, 1910 | H.J. Criner | Exhaust Valve Regulator | internal combustion engine valves |
| 998,327 | Jul. 18, 1911 | H.J. Criner | Exhaust Valve Regulator | |
