Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7383635 | Multipurpose drawing tool | — | 2008-06-10 |
| D566752 | Stamper | — | 2008-04-15 |
| 7246556 | Case for multiple stamp pads | Simon Leung | 2007-07-24 |
| 7171757 | Folding ruler | — | 2007-02-06 |
| 6799973 | System for teaching children about the use of money | — | 2004-10-05 |
| D483076 | Dice spinner | — | 2003-12-02 |
| D480437 | Toy block | — | 2003-10-07 |
| 6606796 | Drawing tool | — | 2003-08-19 |
| 6583370 | Plastic encased weights | — | 2003-06-24 |
| D473901 | Toy clock | — | 2003-04-29 |
| D467189 | Trundle measure wheel | — | 2002-12-17 |
| D459857 | Cashbox | — | 2002-07-02 |
| D378359 | Compass | — | 1997-03-11 |
| 5419054 | Triangular drafting instrument | — | 1995-05-30 |