Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5941145 | Tube squaring tool | Mark A. Marshall | 1999-08-24 |
| D407724 | Tube squaring tool | Mark A. Marshall | 1999-04-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5941145 | Tube squaring tool | Mark A. Marshall | 1999-08-24 |
| D407724 | Tube squaring tool | Mark A. Marshall | 1999-04-06 |