Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862516 | System for automatically tuning the antenna of a miniature portable communications device | Philip P. Macnak, Walter L. Davis | 1989-08-29 |
| 4817196 | Apparatus for tuning the antenna of a miniature personal communications device | Philip P. Macnak | 1989-03-28 |