Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470692 | Air return bulkhead with filter | David B. Ziegler, Phillip R. Boudewyns, Ta Yang Yang | 2002-10-29 |
| 6364388 | Air return bulkhead for use with a transport temperature control system | David B. Ziegler, Jerry Kiesner | 2002-04-02 |