Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860336 | Radiotelephone credit card data communications | Robert F. D'Avello, Daniel S. Rokusek | 1989-08-22 |
| 4860341 | Radiotelephone credit card call approval synchronization | Robert F. D'Avello, Joseph L. Kowalski | 1989-08-22 |
| 4831647 | Radiotelephone credit card data communications | Robert F. D'Avello, Daniel S. Rokusek | 1989-05-16 |