Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33065 | Compact detector for radon and radon daughter products | H. Ward Alter | 1989-09-19 |
| 4518860 | Compact detector for radon and radon daughter products | H. Ward Alter | 1985-05-21 |