Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4369427 | Method and circuit arrangement for determining the entry and/or exit of a vehicle, in particular a traffic vehicle, into and out of a predetermined monitoring zone | Heinz Merkle | 1983-01-18 |
| 4303905 | Method and apparatus for calculating the green light time in traffic-dependently controllable street traffic signal systems | — | 1981-12-01 |
| 4290136 | Circuit arrangement for monitoring the state of signal systems, particularly traffic light signal systems | Heinrich Brunner, Peter Hoehne, Johann Hoisl, Guenter Kochanowski, Walter Wimmer | 1981-09-15 |