Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867253 | Dampener for impacting mechanism | Elmer B. Phelps | 1989-09-19 |
LE
Larry G. Eftefield
Overall (1989): #84,987 of 140,708Top 65%
1
Patents 1989