Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855693 | Dielectric filter and a method of manufacture thereof | Osamu Yamato, Hiroyuki Horii | 1989-08-08 |
| 4808951 | Dielectric filter | Osamu Yamato, Hiroyuki Horii, Tetuji Takino, Takanori Yamasaki, Yoshimitu Sakurai +1 more | 1989-02-28 |