Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844302 | Two-part closure assembly | — | 1989-07-04 |
| 4619826 | Acne control method | Richard A. Knipstein, Daniel H. Haigh | 1986-10-28 |
| 4489058 | Acne control method | Daniel H. Haigh, Richard A. Knipstein | 1984-12-18 |
| 4451453 | Method for treating contact dermatitis | Daniel H. Haigh | 1984-05-29 |