Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6850471 | Electrical device | Guenter Schuchardt | 2005-02-01 |
| 6628930 | Radio receiver with two tuners and a switch for verifying reception quality at an alternative frequency | Lothar Vogt | 2003-09-30 |
| 6327532 | Navigation method and navigation apparatus for a vehicle | Walter Fricke, Peter Heidekrueger | 2001-12-04 |
| RE36277 | Infrared method and apparatus for measuring gas concentration of a plurality of component gases in a sample | Walter I. Armstrong | 1999-08-24 |
| 5583339 | Infrared method and apparatus for measuring gas concentration of a plurality of component gases in a sample | Walter I. Armstrong | 1996-12-10 |
| 5510269 | Infrared method and apparatus for measuring gas concentration including electronic calibration | Walter I. Armstrong | 1996-04-23 |
| 4692669 | Picture tube screen grid potential control | Gunter Schuchardt | 1987-09-08 |