Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5962946 | Method of making a flat commutator | Richard L. Kobman, Dirk G. Westendorf, Arthur J. Birchenough, James A. George, Marc B. Ruprecht +1 more | 1999-10-05 |
| 5925962 | Electric motor commutator | Richard L. Kobman, Dirk G. Westendorf, Arthur J. Birchenough, James A. George, Marc B. Ruprecht +1 more | 1999-07-20 |