Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4494738 | Shock-absorbing joint and assembly with rotating arms and elastomeric spring action | Thomas A. Clark | 1985-01-22 |
| 4412759 | Reach rod grouting system | Don B. Landers | 1983-11-01 |
| 4376597 | Pull-out diaphragm seal for hollow tubes | William G. Stanfield, Don B. Landers | 1983-03-15 |