Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6862499 | Environment-controlled transport unit | Joaquim Geraldo Cretella, Doyle G. Herrig, Leslie D. Rustad, Richard W. Schmidt, Thomas A. Flanagan | 2005-03-01 |
| 6508076 | Duct system for temperature-controlled cargo containers | David B. Ziegler, Doug Lenz, Ming Zhang, Verlin Wirth | 2003-01-21 |
| 6296561 | Air return bulkhead for temperature controlled trailers | David B. Ziegler, Robert L. Sirotek, Jr., Pat Hotch, Gregg George, Kevin W. Kiefer | 2001-10-02 |
| 5427237 | Shipping crate and air return bulkhead for a transport refrigeration unit | Kevin W. Kiefer, Robert L. Sirotek, Jr. | 1995-06-27 |