Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6234193 | Dual drain outlet box | Billy J. Hobbs, Philip A. Mulvey, Jerry P. Mitchell, Charles T. Crisman | 2001-05-22 |
| 6170529 | Knock-off plug for plastic pipe | — | 2001-01-09 |
| 6125881 | Dual drain outlet box | Billy J. Hobbs, Philip A. Mulvey, Jerry P. Mitchell, Charles T. Crisman | 2000-10-03 |