Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691385 | Growth promotion | David B. Anderson, Klaus K. Schmiegel | 1997-11-25 |
| 5643967 | Growth promotion | David B. Anderson, Klaus K. Schmiegel, Ronald R. Tuttle | 1997-07-01 |
| 5631298 | Growth promotion | David B. Anderson | 1997-05-20 |