Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9899746 | Electronically steerable single helix/spiral antenna | John E. Grandfield, Matthew John Shea, Michael P. Abban | 2018-02-20 |
| 9337533 | Ground plane meandering in Z direction for spiral antenna | John E. Grandfield | 2016-05-10 |