Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6296561 | Air return bulkhead for temperature controlled trailers | David B. Ziegler, Robert L. Sirotek, Jr., Pat Hotch, Gregg George, Randal Gast | 2001-10-02 |
| 5427237 | Shipping crate and air return bulkhead for a transport refrigeration unit | Randal Gast, Robert L. Sirotek, Jr. | 1995-06-27 |
| 4923237 | Refrigerated truck having a body movable relative to a chassis | Cynthia J. Satterness | 1990-05-08 |
| 4257240 | Container refrigeration unit | David A. Christiansen, Lowell B. Naley, Ronald W. Seipp, Lawrence J. Shirek, Robert L. Harrington | 1981-03-24 |