Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872186 | Apparatus and method for identification of message initiation in a process control network | Yasuo Kumeda | 1989-10-03 |
| 4860280 | Apparatus and method for a secure and diagnosable antijabber communication circuit | — | 1989-08-22 |