Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5082089 | Traction motor suspension bearing lubricator | Richard J. Renk, Richard M. Ebert | 1992-01-21 |
| 5038631 | Lubricant restricting device | Richard J. Renk, Richard M. Ebert | 1991-08-13 |
| 4892000 | Lubricant restricting device | Richard J. Renk, Richard M. Ebert | 1990-01-09 |
| 4470324 | Gear case | Richard J. Renk | 1984-09-11 |
| 4347759 | Gear case | Richard J. Renk | 1982-09-07 |
| D256721 | Closure cap | Richard J. Renk | 1980-09-02 |