Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811989 | Process for manufacture of closed end mops | Robert W. Quearry, Robert D. Chalfant, Richard W. Chalfant | 1989-03-14 |
| 4811990 | Process for manufacture of closed end wet mops | Robert W. Quearry, Robert D. Chalfant, Richard W. Chalfant | 1989-03-14 |
| 4752985 | Closed end mops | Robert W. Quearry, Robert D. Chalfant, Richard W. Chalfant | 1988-06-28 |
| 4750234 | Closed end wet mops | Robert W. Quearry, Robert D. Chalfant, Richard W. Chalfant | 1988-06-14 |