Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6633231 | Communication device and auxiliary device for communication | Kazutaka Okamoto, Hiroyuki Ebi | 2003-10-14 |
| 6522078 | Remotely controlled power supply switching system | Kazutaka Okamoto, Hiroji Kohsaka | 2003-02-18 |