Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4999641 | Magnetic antenna system having independently controllable electrical field shielding and magnetic field balance | Robert A. Cordery | 1991-03-12 |
| 4972198 | Multiple loop antenna | John F. Feltz, Richard D. Heaton | 1990-11-20 |
| 4890115 | Magnetic antenna | — | 1989-12-26 |
| 4872018 | Multiple loop antenna | John F. Feltz, Richard D. Heaton | 1989-10-03 |
| 4774504 | EAS tag with helical coil | — | 1988-09-27 |