Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5625341 | Multi-bit EAS marker powered by interrogation signal in the eight MHz band | Olin S. Giles, Richard B. Frederick, David B. Ferguson | 1997-04-29 |
| 5608379 | Deactivatable EAS tag | Douglas A. Narlow | 1997-03-04 |
| 5517195 | Dual frequency EAS tag with deactivation coil | Douglas A. Narlow | 1996-05-14 |
| 5111186 | LC-type electronic article surveillance tag with voltage dependent capacitor | Doug Narlow | 1992-05-05 |
| 5103234 | Electronic article surveillance system | Harry E. Watkins, Brent F. Balch, Jeffrey T. Oakes, Richard L. Copeland, Mart Martinson | 1992-04-07 |
| 5099225 | Electrostatic tag for use in an EAS system | Doug Narlow | 1992-03-24 |
| 4859991 | Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation | Harry E. Watkins, Brent F. Balch, Jeffery T. Oakes, Richard L. Copeland, Mart Martinson | 1989-08-22 |
| 4539706 | Mobile vehicular repeater system which provides up-link acknowledgement signal to portable transceiver at end of transceiver transmission | David Fulton Mears | 1985-09-03 |