Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6341158 | Telephony Test Technique | Nicholas D. De Trana, Craig L. DeCaluwe, Robert G. Demmert | 2002-01-22 |
| 6058182 | Communications switch permitting transparent maintenance of switch control system | Nicholas D. De Trana, Craig L. DeCaluwe, Beverly A. McKinney, Gene R. Turek | 2000-05-02 |