Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820447 | Mild skin cleansing soap bar with hydrated cationic polymer skin conditioner | Ralph F. Medcalf, Jr., Martha O. Visscher, John R. Knochel | 1989-04-11 |
RD
Richard Marc Dahlgren
Overall (1989): #66,304 of 140,708Top 50%
1
Patents 1989