Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4631961 | Sampling device for determining conditions on the interior surface of a water main | Rodney M. Donlan, Karl M. Kyriss | 1986-12-30 |
| 4608163 | Apparatus for purification of contaminated groundwater | Karl M. Kyriss | 1986-08-26 |
| 4526692 | Process for purification of contaminated groundwater | Karl M. Kyriss | 1985-07-02 |