Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4980550 | Radon measuring device | Eli A. Port, Edward E. Sebesta | 1990-12-25 |
| 4948970 | Radon measuring device | Eli A. Port, John Bitner, Irwin P. Lazarus, Richard E. Toohey | 1990-08-14 |