| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/312 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
| 1,216,499 | Feb. 20, 1917 | A.J. Roeffs | Drip Connection for Fire-cocks, Hydrants, and the Like | ||
| 1,954,192 | Apr. 10, 1934 | G.A. Biggs | Valve | ||
| 1,997,890 | Apr. 16, 1935 | E.L. Wall | Universal Tracer | ||