Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684930 | Method and apparatus for deactivating targets used in electromagnetic type article surveillance systems | Arthur J. Minasy | 1987-08-04 |
| 4665387 | Method and apparatus for target deactivation and reactivation in article surveillance systems | Michael N. Cooper | 1987-05-12 |
| 4642613 | Electronic theft detection apparatus with responder elements on protected articles | — | 1987-02-10 |
| 4568921 | Theft detection apparatus and target and method of making same | — | 1986-02-04 |
| 4476459 | Theft detection method and apparatus in which the decay of a resonant circuit is detected | Michael N. Cooper | 1984-10-09 |
| 4321586 | Article theft detection | Michael N. Cooper | 1982-03-23 |