Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888924 | Door frame extension assembly | C. Lynwood Grisham | 1989-12-26 |
| 4850144 | Door extension apparatus | C. Lynwood Grisham | 1989-07-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888924 | Door frame extension assembly | C. Lynwood Grisham | 1989-12-26 |
| 4850144 | Door extension apparatus | C. Lynwood Grisham | 1989-07-25 |