Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744446 | Display of a hiearchical telecommunication network | Graham John Davies, Gregory James Helbert | 2004-06-01 |
| 6601185 | Secondary alarm filtering | Graham John Davies | 2003-07-29 |