Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5134391 | System for preventing the use of an unauthorized external memory | — | 1992-07-28 |
| 5095798 | Electronic gaming device with pseudo-stereophonic sound generating capabilities | Hirokazu Tanaka | 1992-03-17 |