Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4937858 | Telephone handset with electro-acoustic converters electrically connected by a cord | Karl-Heinz Niederhofer | 1990-06-26 |
| 4790007 | Telephone instrument | Ludwig Richter, Karl-Heinz Niederhofer, Dieter Kramer, Gerhard Sussner, Volker Munch +3 more | 1988-12-06 |
| 4782522 | Terminal for a telecommunications switching system having an additional keyboard and/or visual display | Dieter Kramer, Gerhard Sussner, Karl-Heinz Niederhofer, Werner Beck, Bernd Ogorczyk | 1988-11-01 |
| D297137 | Telephone set | Ludwig Richter, Dieter Kraemer, Helmut Mayer, Hajo von Reyer, Gerhard Sussner +1 more | 1988-08-09 |
| D294351 | Telephone set | Ludwig Richter, Dieter Kraemer, Helmut Mayer, Hajo von Reyer, Gerhard Sussner +1 more | 1988-02-23 |
| D294248 | Telephone set | Ludwig Richter, Dieter Kraemer, Helmut Mayer, Hajo von Reyer, Gerhard Sussner +1 more | 1988-02-16 |