Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288998 | Polylobe drive element | Donald M. Wilhelm | 1981-09-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288998 | Polylobe drive element | Donald M. Wilhelm | 1981-09-15 |