Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850007 | Telephone toll service with advertising | Patrick J. Marino | 1989-07-18 |
| 4796020 | Method and apparatus for drawing antialiased lines and polygons | Zigmantas L. Budrikis | 1989-01-03 |