Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883291 | Dot matrix formed security fonts | — | 1989-11-28 |
| 4870922 | Apparatus for marking fragile surfaces | — | 1989-10-03 |
| 4808018 | Marking apparatus with matrix defining locus of movement | David L. Cyphert | 1989-02-28 |
| 4806741 | Electronic code enhancement for code readers | — | 1989-02-21 |