Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4423631 | Construction of a housing, particularly for tachographs, and of a cover pivotally arranged on the housing | — | 1984-01-03 |
| 4306244 | Speed recording device | — | 1981-12-15 |
| 4291313 | Recording apparatus | — | 1981-09-22 |
| 4249745 | Recording apparatus | — | 1981-02-10 |
| 4187510 | Device for recording vehicle speeds | — | 1980-02-05 |