Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7833097 | Game pad controller and system for portable communication device | Christopher Maddox, Mark J. Hassebrock, Philip Hobson Boothby, Michael D. Johnson, Robert Stone | 2010-11-16 |
| D544481 | Mobile telephone gamepad controller | Christopher Maddox, Mark J. Hassebrock, Philip Hobson Boothby, Michael D. Johnson, Robert Stone | 2007-06-12 |