Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10138609 | Container for spreader material and a liquid tank | Rolf Isele | 2018-11-27 |
| 6511220 | Method and device for generating a signal according to a liquid film on a surface | Etienne Bornand | 2003-01-28 |
| 6326893 | Process and warning device for producing an early warning signal of slick road conditions | Joachim Heierlj | 2001-12-04 |
| 6126083 | Method and a stationary arrangement for discharging a deicing liquid | Theodor Weber | 2000-10-03 |
| 4858270 | Pavement-cleaning vehicle | — | 1989-08-22 |
| 4685228 | Snow-removing machine | Hans-Joerg Gisler | 1987-08-11 |
| 4600842 | Snowfall measuring method and apparatus | Beat Schmutz | 1986-07-15 |
| 4557420 | Electromagnetically controllable spray valve and spray system | Walter Zehnder | 1985-12-10 |
| 4388018 | Eccentric-disk tamper | — | 1983-06-14 |
| 4383770 | Apparatus for determining the freezing point of a liquid on or from a road surface | Walter Zehnder | 1983-05-17 |
| 4222044 | Early ice-warning device | — | 1980-09-09 |
| 4203459 | Controlling mechanism for sprinkler system | — | 1980-05-20 |