Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818958 | Compact dual series waveguide feed | William L. Lange, Stan W. Livingston | 1989-04-04 |
| 4812789 | Ridged waveguide wide band diplexer with extremely sharp cut-off properties | — | 1989-03-14 |