Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884886 | Biological particle identification apparatus | Charles T. Gregg, W. Kevin Grace, Richard D. Hiebert | 1989-12-05 |
| 4796995 | Optically active biological particle distinguishing apparatus | Robert H. Kupperman | 1989-01-10 |