| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 439/13 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,108,940 | Sep. 01, 1914 | C.W. Starker | Collector-ring | induction motors | |
| 2,718,604 | Sep. 20, 1955 | G.H. Herrick | Collector Ring Assembly | electric generators | |
| 2,885,915 | May 12, 1959 | G.H. Schurger | Machine Tool Table | rotary tables | |