Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677677 | System for monitoring the operation of an evaporator unit | Paul J. Duff, John Larson | 1997-10-14 |
| 5546073 | System for monitoring the operation of a compressor unit | Paul J. Duff, John Larson | 1996-08-13 |
| 5539382 | System for monitoring the operation of a condenser unit | Paul J. Duff, John Larson | 1996-07-23 |
| 5539385 | System for monitoring condenser pressure | Paul J. Duff, John Larson | 1996-07-23 |