Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843775 | Square butt door frame and method of assembly | Laurence P. Armstrong, Scott A. Libby, James L. Peterson | 1989-07-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843775 | Square butt door frame and method of assembly | Laurence P. Armstrong, Scott A. Libby, James L. Peterson | 1989-07-04 |