Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855902 | Microprocessor assisted data block transfer apparatus | Ronald J. Freimark | 1989-08-08 |
| 4847831 | Bidirectional repeater for manchester encoded data signals | Robert L. Spiesman | 1989-07-11 |