Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859720 | Process and compositions for sizing paper | Peter Flesher, Norma Rosier, David Farrar | 1989-08-22 |
| 4835206 | Water soluble polymeric compositions | David Farrar, Adrian Swinburne Allen | 1989-05-30 |