Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7308759 | Method for production of a multi-layer carbon brush | Rainer Sperling, Martin Schwarzer, Rolf Heilmann | 2007-12-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7308759 | Method for production of a multi-layer carbon brush | Rainer Sperling, Martin Schwarzer, Rolf Heilmann | 2007-12-18 |