Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4577061 | Arrangement for a pay telephone payment system utilizing a payment card within the telecommunication system | Kurt Katzeff | 1986-03-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4577061 | Arrangement for a pay telephone payment system utilizing a payment card within the telecommunication system | Kurt Katzeff | 1986-03-18 |