Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6621912 | Speaker | Shigeru Sugiyama, Hajime Kitamura, Naohiro Fujinami, Yoshio Imahori | 2003-09-16 |
| 6513623 | Speaker | Shigeru Sugiyama, Hajime Kitamura, Naohiro Fujinami, Yoshio Imahori | 2003-02-04 |