Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5798624 | Motor circuit | David P. Weichmann | 1998-08-25 |
| 5348449 | Airflow regulator | James M. Grupa | 1994-09-20 |
| 4347468 | Electronic variable speed automotive blower control system | — | 1982-08-31 |