Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857334 | Synthetic resin matrix system incorporating healing enhancer | Paul Nathan | 1989-08-15 |
| 4820292 | Anti-microbial sensitivity test and testing stratum | Paul Nathan | 1989-04-11 |