| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 322/30 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 294,095 | Feb. 26, 1884 | E. Thomson | Electric Power Distribution System | |
| 2,598,124 | May 27, 1952 | J.K. Stotz, G.T. Holt | Power Plant Regulation | ||