Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7828627 | O.D. centerless grinding machine | David R. Hall, Italo Elqueta, Nam Lieu, Tyson J. Wilde | 2010-11-09 |
| 7677954 | O.D. centerless grinding machine | David R. Hall, Italo Elqueta, Nam Lieu, Tyson J. Wilde | 2010-03-16 |