Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824293 | Retaining wall structure | Richard L. Brown | 1989-04-25 |
| 4804299 | Retaining wall system | Gary L. Forte, Richard L. Brown, Wayne Miller, Michael D. Prior | 1989-02-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824293 | Retaining wall structure | Richard L. Brown | 1989-04-25 |
| 4804299 | Retaining wall system | Gary L. Forte, Richard L. Brown, Wayne Miller, Michael D. Prior | 1989-02-14 |