Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5759096 | Trimodal air/fluid driven sash operator fume hood | Warren L. Zeigler | 1998-06-02 |
| 5303659 | Down draft work table | Richard L. Wendt, Warren L. Zeigler, Waynne R. Zeigler | 1994-04-19 |
| 4774878 | Trimodal piston driven sash operator | Richard L. Wendt, Warren Ziegler | 1988-10-04 |