Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7255345 | Advanced games and puzzles | Francis Henry Dyksterhuis | 2007-08-14 |
| 5868388 | Games and puzzles | Francis Henry Dyksterhuis | 1999-02-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7255345 | Advanced games and puzzles | Francis Henry Dyksterhuis | 2007-08-14 |
| 5868388 | Games and puzzles | Francis Henry Dyksterhuis | 1999-02-09 |