| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 122/451.1 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,172,709 | Feb. 22, 1916 | F.H. Hopkins | Thermostatic Arch Flow Regulator | pressure regulators | |
| 1,659,558 | Feb. 21, 1928 | A.D. Baker | Water-Level Control for Boilers | feedwater apparatus | |