Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4536162 | Child's playset | Ray W. Mattson, Mark Wittenberg | 1985-08-20 |
| 4195437 | Convertible doll house | — | 1980-04-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4536162 | Child's playset | Ray W. Mattson, Mark Wittenberg | 1985-08-20 |
| 4195437 | Convertible doll house | — | 1980-04-01 |