Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831677 | Sponge mop | Robert B. Staubitz, William H. Valls, Peter M. MacDonald | 1989-05-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831677 | Sponge mop | Robert B. Staubitz, William H. Valls, Peter M. MacDonald | 1989-05-23 |