Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826404 | Tone signalling with TFO communication links | Eckhard Delfs, Karl Hellwig, Rudolf Hoffmann | 2004-11-30 |
EE
Emilian Ertel
Overall (2004): #228,218 of 270,089Top 85%
1
Patents 2004