Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5794933 | Enhanced playing chip for word games | William Chalfin | 1998-08-18 |
| 5615886 | Word forming board game with colored transparent tiles | William Chalfin | 1997-04-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5794933 | Enhanced playing chip for word games | William Chalfin | 1998-08-18 |
| 5615886 | Word forming board game with colored transparent tiles | William Chalfin | 1997-04-01 |