Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843606 | Local area communication system for integrated services based on a token-ring transmission medium | Felix H. Closs, Johann Mueller, Harmen Van As, Pitro A. Zafiropulo | 1989-06-27 |