Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873505 | Electric noise absorber | — | 1989-10-10 |
| 4835121 | Infrared transparent glass ceramic articles with beta-quarts solid solution crystals without any other crystals | Takehiro Shibuya, Makoto Matsumoto | 1989-05-30 |
| 4825185 | Electric noise absorber | — | 1989-04-25 |
| 4813642 | Fixation device for electronic display | — | 1989-03-21 |