Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753047 | Method, washer apparatus and cleaning agent for cleaning a glass window of a motor vehicle | Elmar Rach | 1998-05-19 |
| 5382792 | Angle sensor with hermetic sealing and magnetic coupling | Kurt Hurst, Hans-Peter Braun | 1995-01-17 |
| 4789582 | Heat retention device for windows, doors and the like | Wolfgang Grothe | 1988-12-06 |
| 4532181 | Multilayer web for reducing loss of radiant heat | Wolfgang Grothe | 1985-07-30 |
| 4450201 | Multiple-layer heat barrier | Wolfgang Grothe | 1984-05-22 |
| 4241356 | Recording medium for thermographic recording of data items | Wolfgang Grothe | 1980-12-23 |