Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7517191 | Operational maintenance of air-conditioning installations | Thomas W. Bein, William L. Tucker | 2009-04-14 |
| 4238873 | Apparatus for collecting and transporting heat energy | Donald E. Oberbeck | 1980-12-16 |