Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5845909 | Stuffing box with improved packing rings and method | Lawrence F. Angelo, Stephen L. Witte, Sr. | 1998-12-08 |
| 5622371 | Stuffing box with improved packing rings and method | Lawrence F. Angelo, Stephen L. Witte, Sr. | 1997-04-22 |