Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948645 | Adjustable frame for retaining hand truck on vehicular body | John M. Pierce, Billie M. Bloodworth | 2005-09-27 |
| 6786373 | Adjustable frame for retaining hand truck on vehicular body | John M. Pierce | 2004-09-07 |