Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4435988 | Apparatus for indicating critical torque load | Lanny V. Grade | 1984-03-13 |
| 4423639 | Apparatus for adjusting and indicating the tension in a guy line | Lanny V. Grade | 1984-01-03 |
| 4236408 | Drilling rig load indicator | — | 1980-12-02 |