Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369759 | Call information based matching system for stored program-controlled switching system | — | 1994-11-29 |
| 5188272 | Guide roller with metal cylinder and resin portion | Kazunori Okamura | 1993-02-23 |