Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12397633 | Tank ventilation device for a motor vehicle | Karl Gruenbeck | 2025-08-26 |
| 11885273 | Method and device for ascertaining the flow through a timer valve | Karl Gruenbeck | 2024-01-30 |