Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824727 | Char-forming protective coating for flexible base materials | Charles Balian, Jon H. Simpson | 1989-04-25 |
| 4807142 | Screen manager multiple viewport for a multi-tasking data processing system | — | 1989-02-21 |