Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8948347 | Method and device for checking the connection of a positive supply voltage to a subscriber access line comprising a plurality of wires | Heike Diegel, Roland Krimmer, Bernhard Sieben | 2015-02-03 |
| 8509421 | Method and device for checking a subscriber line | — | 2013-08-13 |
| 8107615 | Method and device for checking the function for inverting the polarity on a subscriber line comprising a plurality of wires | Heike Diegel, Roland Krimmer, Bernhard Sieben | 2012-01-31 |
| 6516054 | Method for adjusting current levels, which have been falsified by offset-current levels, in a subscriber line circuit | Roland Krimmer | 2003-02-04 |
| 6490342 | Method for quickly testing the operability of a subscriber circuit | — | 2002-12-03 |