Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860878 | Collapsible conveyor support structure/carrier | Donald R. Skuce | 1989-08-29 |
| 4842130 | Belt bender | — | 1989-06-27 |
| 4820095 | Anchor device for securing rock bolts | — | 1989-04-11 |
| 4818144 | Flood isolation dam | — | 1989-04-04 |