Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5012144 | Linear direct drive motor | Thomas W. Huitema, William H. Eiszner, Jr., Robert D. Vanderlaan | 1991-04-30 |
| 4641812 | Direct drive valve and force motor assembly including interchangeable stator assembly and alignment system or method | Robert D. Vanderlaan | 1987-02-10 |