Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4559305 | Microbial culture system | James E. Zajic, Martha A. Hill, Karel Muzika | 1985-12-17 |
| 4211645 | Foam flotation activated sludge process | James E. Zajic, Martha A. Hill, Karel Muzika | 1980-07-08 |