Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5813241 | Crytallization detection and recovery for two-stage absorption refrigeration machine | Lee L. Sibik | 1998-09-29 |
| 5711507 | Automatic calibrating electrically controlled diaphragm valve actuators and methods for their calibration | Dennis L. Manthei | 1998-01-27 |
| 5586447 | Concentration control in an absorption chiller | Lee L. Sibik | 1996-12-24 |
| 5518015 | Automatic calibrating electrically controlled diaphragm valve actuators and methods for their calibration | Dennis L. Manthei | 1996-05-21 |