Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7973234 | Strum input for a video game controller | Johnnie Tam | 2011-07-05 |
| 7754961 | Strum input for a video game controller | Johnnie Tam | 2010-07-13 |
| 7435178 | Tremolo bar input for a video game controller | Johnnie Tam, Theodor R. Lange, John Yao | 2008-10-14 |