Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851736 | Helical waveguide to rectangular waveguide coupler | Cheryl V. Liss | 1989-07-25 |
| 4807355 | Method of manufacture of coupled-cavity waveguide structure for traveling wave tubes | — | 1989-02-28 |