Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5914775 | Triangulation rangefinder and sight positioning system | Jeffrey B. Hargrove, John E. Briggs | 1999-06-22 |
| 5479712 | Triangulation rangefinder for archers | Jeffrey B. Hargrove, John E. Briggs | 1996-01-02 |