Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5074329 | Three-way valve for a refrigeration system | Darrel J. Hokanson, William B. McKenzie | 1991-12-24 |
| 5046326 | Transport refrigeration system | Loyal V. Pittman | 1991-09-10 |
| 4960088 | Low fuel shut-off system | Herman H. Viegas, Ricardo Spiro DeGrego | 1990-10-02 |
| 4932841 | Combination oil pressure regulator and low oil pressure detector for refrigerant compressor | — | 1990-06-12 |
| 4890459 | Monitor for refrigeration system | — | 1990-01-02 |
| 4770002 | Transport refrigeration system | Herman H. Viegas, Bruce E. McClellan | 1988-09-13 |
| 4616743 | Centrifugal clutch particularly useful in transport refrigeration unit | — | 1986-10-14 |
| 4329957 | Engine control | — | 1982-05-18 |