Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835677 | System for directly and indirectly accessing control registers by different operating systems based upon value of operating system indication bit | Yoshihiro Mizushima, Katsumi Ohnishi, Motokazu Kato, Toshio Matsumoto | 1989-05-30 |