Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885877 | Frame structure for buildings | Kenneth J. Gardner | 1989-12-12 |
| 4879848 | Viewing structure | Kenneth J. Gardner | 1989-11-14 |
| 4838294 | Openable enclosures and structures incorporating such enclosures | — | 1989-06-13 |