Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838894 | Hair dye coupler and process for making | Keith C. Brown, Bryan Patrick Murphy | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838894 | Hair dye coupler and process for making | Keith C. Brown, Bryan Patrick Murphy | 1989-06-13 |