Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5572879 | Methods of operating a refrigeration unit in predetermined high and low ambient temperatures | Alan D. Gustafson | 1996-11-12 |
| 5011119 | Conveniently attached hydraulic trailer jack | — | 1991-04-30 |
| 4918932 | Method of controlling the capacity of a transport refrigeration system | Alan D. Gustafson, Lowell B. Naley, David A. Christiansen, Stanley O. Hoium, Dannis R. Johnson +1 more | 1990-04-24 |
| 4897939 | Footwear reinforcement | — | 1990-02-06 |
| 4842227 | Strain relief clamp | Terry G. Larson, Richard F. Unger | 1989-06-27 |
| 4834401 | Fuel tank assembly for a refrigerated container | Dennis F. Feldhake, Bradley G. Ellingson, Virgil D. Leinum, Thomas J. Niemi | 1989-05-30 |
| 4834572 | Mounting clamp | Dennis F. Feldhake, Bradley G. Ellingson, Bruce E. McClellan | 1989-05-30 |
| 4257240 | Container refrigeration unit | David A. Christiansen, Kevin W. Kiefer, Lowell B. Naley, Ronald W. Seipp, Lawrence J. Shirek | 1981-03-24 |