Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6424309 | Broadband compact slot dipole/monopole and electric dipole/monopole combined antenna | Ronald H. Johnston, Tin Chau Choi | 2002-07-23 |
| 6140972 | Multiport antenna | Ronald H. Johnston | 2000-10-31 |