Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6611804 | Universal TTY/TDD devices for robust text and data transmission via PSTN and cellular phone networks | Karl Hellwig | 2003-08-26 |
MD
Matthias Dörbecker
Overall (All Time): #3,521,138 of 4,157,543Top 85%
1
Patents All Time