Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6195119 | Digitally measuring scopes using a high resolution encoder | James G. Costello | 2001-02-27 |
| 5801762 | Digitally measuring scopes using a high resolution encoder | James G. Costello | 1998-09-01 |
| 5573492 | Digitally measuring scopes using a high resolution encoder | James G. Costello | 1996-11-12 |