Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882555 | Plural plane waveguide coupler | — | 1989-11-21 |
| 4818964 | Switchable multi-power-level short slot waveguide hybrid coupler | — | 1989-04-04 |
| 4812788 | Waveguide matrix including in-plane crossover | Robert J. Patin, Theodore S. Fishkin, Donald C. D. Chang | 1989-03-14 |
| 4810982 | Coaxial transmission-line matrix including in-plane crossover | — | 1989-03-07 |
| 4797643 | Coaxial hybrid coupler and crossing element | Samuel Wong | 1989-01-10 |
| 4797681 | Dual-mode circular-polarization horn | Sidney J. Kaplan | 1989-01-10 |