Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D379048 | Cassette for storing flat articles, particularly data carriers | Willem de Koning | 1997-05-06 |
| 5617949 | Cassette, designed to recieve flat objects, especially data carriers | Willem de Koning | 1997-04-08 |