Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7222788 | Method for registering tickets and electronic ticket | Bruno Wenger | 2007-05-29 |
| 6792249 | Method for generating a quasi-isotropic magnetic alternating field | Matti-Pekkia Aukia | 2004-09-14 |
| 6016129 | Antenna system, in particular an antenna system for traffic communicating systems | — | 2000-01-18 |
| 5087899 | Variable attenuation network with constant input and output resistances | — | 1992-02-11 |
| 5063354 | Frequency synthesizing device | Hanspeter Kupfer, Daniel J. Rieder | 1991-11-05 |
| 4891599 | Expander system for pulse signals | Andreas Steffen | 1990-01-02 |
| 4812771 | Expander system for pulse signals | Andreas Steffen | 1989-03-14 |