Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4241808 | Portable and collapsible A-frame prop type scaffold | Donald E. Middleton | 1980-12-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4241808 | Portable and collapsible A-frame prop type scaffold | Donald E. Middleton | 1980-12-30 |