Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331022 | Method for the reduction of radon load in closed spaces | Josef Hess | 1994-07-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331022 | Method for the reduction of radon load in closed spaces | Josef Hess | 1994-07-19 |