Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850595 | Crossword puzzle game | Mitchell M. Geffen | 1989-07-25 |
| D302167 | Sleep mask | — | 1989-07-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850595 | Crossword puzzle game | Mitchell M. Geffen | 1989-07-25 |
| D302167 | Sleep mask | — | 1989-07-11 |