Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6634062 | Frictional hinge device and a portable business machine into which the frictional hinge device is incorporated | Takaaki Hayashida | 2003-10-21 |
| 6539583 | Frictional hinge device and a portable business device having the hinge device incorporated thereinto | Takaaki Hayashida | 2003-04-01 |