Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5796807 | Telephone recycling system | Matthew W. Costello, Dan Carpenter | 1998-08-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5796807 | Telephone recycling system | Matthew W. Costello, Dan Carpenter | 1998-08-18 |