Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7561848 | Apparatus for manufacturing management using a wireless device | Robert Chen, Mark E. Depperschmidt, James Lee | 2009-07-14 |
| D571481 | Pool/spa cover | — | 2008-06-17 |
| 6838977 | Apparatus for manufacturing management using a wireless device | Robert Chen, Mark E. Depperschmidt, James Lee | 2005-01-04 |
| 4635938 | Board game | — | 1987-01-13 |
| 4222570 | Simulated radar game | — | 1980-09-16 |