Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7309064 | Puzzle with meshing gear sections | — | 2007-12-18 |
| 6109818 | Recombinator | — | 2000-08-29 |
| D396658 | Linked moebius band | — | 1998-08-04 |
| D364663 | Rubber ball | — | 1995-11-28 |
| 5106093 | Puzzle amusement device | — | 1992-04-21 |
| 5094132 | Adjustable hand wrench | — | 1992-03-10 |
| 4735418 | Puzzle amusement device | — | 1988-04-05 |
| 4487417 | Puzzle amusement device | — | 1984-12-11 |
| 4415158 | Puzzle | — | 1983-11-15 |