Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667247 | Telephone debit card production | Stephen R. Nassoiy, Dennis V. Zutant | 1997-09-16 |
| 5650209 | Manufacture of telephone debit cards | Gerald C. Krahn, Jeffrey S. Walter, Ralph F. Irelan, John L. Wantz, Eric Patterson | 1997-07-22 |