Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10571140 | Method and apparatus for passively controlling airflow | Dennis R. Dietz, John Robert Harrell | 2020-02-25 |
| 9759442 | Method and apparatus for passively controlling airflow | Dennis R. Dietz, John Robert Harrell | 2017-09-12 |
| 9201428 | Method and apparatus for passively controlling airflow | Dennis R. Dietz, John Robert Harrell | 2015-12-01 |
| 7766734 | Method and apparatus for passively controlling airflow | Dennis R. Dietz, John Robert Harrell | 2010-08-03 |