Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5947610 | Hydrodynamic thrust bearing assembly | Stephen L. Feldbauer | 1999-09-07 |
| 4420166 | Stair climber for hand trucks | Don C. Law, Carl N. Mortenson, Roger S. Eckhardt | 1983-12-13 |