Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862158 | Extension arrangement and station connecting method for a ring communication system | Heinz Keller | 1989-08-29 |
| 4862451 | Method and apparatus for switching information between channels for synchronous information traffic and asynchronous data packets | Felix H. Closs, Pitro A. Zafiropulo | 1989-08-29 |
| 4843606 | Local area communication system for integrated services based on a token-ring transmission medium | Werner Bux, Felix H. Closs, Harmen Van As, Pitro A. Zafiropulo | 1989-06-27 |