Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387369 | Broad spectrum charged electric field polar gas sensing and detection system | Carl F. Klein | 1983-06-07 |
| 4264331 | Charged non-conductive polar gas sensing element and detection system | Carl F. Klein, Paul E. Thoma | 1981-04-28 |