Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157363 | Helical resonator filter with adjustable couplings | Pertti Puurunen | 1992-10-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157363 | Helical resonator filter with adjustable couplings | Pertti Puurunen | 1992-10-20 |