Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857381 | Reinforced dielectric sheet | — | 1989-08-15 |
| 4825221 | Directly emitting dielectric transmission line | Hiromi Yasumoto, Haruo Imaizumi | 1989-04-25 |
| 4796046 | Copy machine toner fixing device | Etsuo Yamazaki, Yoshiaki Sato | 1989-01-03 |