Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369703 | Command and control signalling method and apparatus | William R. Davis, Kurt Holmquist | 1994-11-29 |
| 5301246 | Data communications equipment security device using calling party directory number | Steven D. Hunt, Richard K. Smith | 1994-04-05 |