Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6864673 | Method and circuit arrangement for measuring earth leakages in intrinsically safe current feeds | Jens Titschert, Helmut Hermann | 2005-03-08 |
| 6774537 | Warning tone transmitter | Jens Titschert, Jorg Wagner, Helmut Hermann | 2004-08-10 |