Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819529 | Head drum device with carbon-containing synthetic resin upper drum and larger diameter intermediate drum | Tadashi Ooami, Junya Endo, Masanori Maehara, Masahiro Kiko, Tamami Mishiro | 2004-11-16 |