Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6574187 | Audio information recording medium and audio information reproducing apparatus | Hidehiro Ishii, Takao Sawabe, Kaoru Yamamoto, Yoshinori Hasegawa, Tokihiro Takahashi | 2003-06-03 |