Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811951 | Puzzle including pieces formed from a crayon material | Denise Dorsey-Zinn, Sue M. Meiser | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811951 | Puzzle including pieces formed from a crayon material | Denise Dorsey-Zinn, Sue M. Meiser | 1989-03-14 |