Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852911 | Identification card having a magnetic track covered by color and methods for producing it | — | 1989-08-01 |
| 4843225 | Identification card with an integrated circuit | — | 1989-06-27 |
| 4829666 | Method for producing a carrier element for an IC-chip | Yahya Haghiri-Tehrani | 1989-05-16 |
| 4803542 | Carrier element for an IC-module | Yahya Haghiri-Tehrani | 1989-02-07 |
| RE32831 | Apparatus for sealing a well casing | Clinton O. Shonrock, John O. Wambaugh | 1989-01-17 |