Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677677 | System for monitoring the operation of an evaporator unit | John Larson, Joseph B. Lechtanski | 1997-10-14 |
| 5546073 | System for monitoring the operation of a compressor unit | John Larson, Joseph B. Lechtanski | 1996-08-13 |
| 5539382 | System for monitoring the operation of a condenser unit | John Larson, Joseph B. Lechtanski | 1996-07-23 |
| 5539385 | System for monitoring condenser pressure | John Larson, Joseph B. Lechtanski | 1996-07-23 |
| 5327742 | Hierarchial control for discrete chiller units | Keith G. Michaelsen | 1994-07-12 |
| 5309727 | Reactive control for discrete chiller units | Keith G. Michaelsen | 1994-05-10 |
| 5301513 | Monitoring and control of chiller units | Keith G. Michaelsen | 1994-04-12 |
| 4765098 | Rail cutting apparatus | Michael E. Beach | 1988-08-23 |