Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811989 | Process for manufacture of closed end mops | Robert D. Chalfant, Richard W. Chalfant, Robert E. Liggett | 1989-03-14 |
| 4811990 | Process for manufacture of closed end wet mops | Robert D. Chalfant, Richard W. Chalfant, Robert E. Liggett | 1989-03-14 |