Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822314 | Interlocking container and toy block sets | Edward D. O'Brian | 1989-04-18 |
| 4365799 | Folding slide and platform structure | Edward D. O'Brian | 1982-12-28 |
| 4198069 | Folding three-cornered vehicle | Edward D. O'Brian | 1980-04-15 |