Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6769471 | Bottom rail weight and balancing system | Robert J. Voss, Otto Kuhar | 2004-08-03 |
| 6491084 | Bottom rail weight and balancing system | Robert J. Voss, Otto Kuhar | 2002-12-10 |
| 6412537 | Bottom rail weight and balancing system | Robert J. Voss | 2002-07-02 |