Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6483988 | Audio and video signals recording apparatus having signal format detecting function | Hidehiro Ishii, Toshiro Tanikawa | 2002-11-19 |
| 6445873 | Digital data recording/reproducing apparatus | Akihiro Tozaki, Hidehiro Ishii | 2002-09-03 |