Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7739919 | Test specimen holder | Steven Ray Lemmer | 2010-06-22 |
| D429625 | Support frame for mechanical wedge grip | Daniel Ewert, David L. Manlove | 2000-08-22 |
| D413506 | Support frame for a mechanical wedge grip | Daniel Ewert, David L. Manlove | 1999-09-07 |