Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796193 | Postage payment system where accounting for postage payment occurs at a time subsequent to the printing of the postage and employing a visual marking imprinted on the mailpiece to show that accounting has occurred | — | 1989-01-03 |