Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302977 | Keyboard key arrangement | Edmond J. Helstab, Thomas Winlow, Hans Bergman | 1989-08-22 |
| D301033 | Housing for a telephone handset | Clifford D. Read, Warren K. Ellis | 1989-05-09 |