Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4995465 | Rotary drillstring guidance by feedrate oscillation | Jeffrey L. Beck | 1991-02-26 |
| 4633770 | Variable discharge grill for room air conditioner | David A. Reel, Gene R. Renfro | 1987-01-06 |
| 4487615 | Method of reducing mine dust | David M. Miller, Pramod C. Thakur | 1984-12-11 |