Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4636778 | Brush wear monitor | William M. Corkran, Herbert A. Koeth | 1987-01-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4636778 | Brush wear monitor | William M. Corkran, Herbert A. Koeth | 1987-01-13 |