Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841128 | Circuit unit | Thomas Maurer | 1989-06-20 |
| 4291222 | Method and apparatus for card authentication using display of symbols for identification of a personal code word | — | 1981-09-22 |
| 4230411 | Matrix printer | — | 1980-10-28 |