| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/505.4 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 21,281 | Aug. 24, 1858 | W.G. Sterling | Gas Regulator | |
| 312,906 | Feb. 24, 1885 | E. Schrabetz | Gas Governor for Gas Engines | ||
| 565,157 | Aug. 04, 1896 | E.N. Dickerson | Gas Mixer | ||