Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884063 | Dual status magnetic marker having magnetically biasable flux collectors for use in electronic article surveillance systems | Russell W. Church | 1989-11-28 |
| 4857891 | Random-filament, multi-directionally responsive marker for use in electronic article surveillance systems | — | 1989-08-15 |
| 4825197 | Dual status magnetic marker having magnetically biasable flux collectors for us in electronic article surveillance systems | Russell W. Church | 1989-04-25 |