Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884063 | Dual status magnetic marker having magnetically biasable flux collectors for use in electronic article surveillance systems | Eugene C. Heltemes | 1989-11-28 |
| 4825197 | Dual status magnetic marker having magnetically biasable flux collectors for us in electronic article surveillance systems | Eugene C. Heltemes | 1989-04-25 |