Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422059 | Band-pass filter having multilayered coil structures | Tsuneharu Fuji, Takayoshi Ishikawa | 1983-12-20 |
| 4210884 | Helical resonator band pass filter with novel coupling means | Toshihide Tabuchi | 1980-07-01 |