Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868373 | Memory card comprising an optical memory disc and microelectronic memory component, and apparatus for transferring information to and from such card | Willem G. Opheij, Arie Huijser | 1989-09-19 |