Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805946 | Postage meter security seal | Jeffrey J. Prior | 1989-02-21 |
| 4796526 | Value printing die protection device in an electronic postage meter machine | — | 1989-01-10 |
| 4796527 | Value printing die protection mechanism in a postage meter machine | — | 1989-01-10 |