Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5504426 | Check valve position indication system and method | Gary L. Hill, Charles A. Burton, Rodney M. Eslinger | 1996-04-02 |
| 5223793 | Apparatus for controlled rotation of a sphere or ball for inspecting or marking the surface with a predetermined pattern | Gordon C. Oehler, Donald M. Caldwell | 1993-06-29 |