Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476653 | Door sill and adjustable threshold | Wayne L Speer | 1984-10-16 |
| 4214405 | Four-way double door frame | — | 1980-07-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476653 | Door sill and adjustable threshold | Wayne L Speer | 1984-10-16 |
| 4214405 | Four-way double door frame | — | 1980-07-29 |