Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867590 | Dot matrix print head carriage with swingable heat sink | Robert A. Brull | 1989-09-19 |
| 4850725 | Unidirectional ribbon drive mechanism | Bradley W. Lewis, Thomas J. Bossack | 1989-07-25 |
| 4818132 | Optical sensor protective member | Robert A. Brull, Robert F. Bullivant, James R. Del Signore, II | 1989-04-04 |