Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474013 | Trim tab auto-retract and multiple switching device | — | 1995-12-12 |
| 4366821 | Breath monitor device | Joseph A. Kretschmer | 1983-01-04 |
| 4352087 | Fume detector and alarm system | — | 1982-09-28 |