Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958174 | Manufacture of telephone debit cards | Gerald C. Krahn, Jeffrey S. Walter, Ralph F. Irelan, John L. Wantz, Eric Patterson | 1999-09-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958174 | Manufacture of telephone debit cards | Gerald C. Krahn, Jeffrey S. Walter, Ralph F. Irelan, John L. Wantz, Eric Patterson | 1999-09-28 |