Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4276142 | Electrochemical sensor, particularly for internal combustion engine exhaust gas composition determination, and method of its manufacture | Karl-Hermann Friese, Wolf-Dieter Haecker | 1981-06-30 |
| 4265724 | Electrochemical sensor, particularly oxygen sensor to determine exhaust gas composition from automotive internal combustion engines | Wolf-Dieter Haecker, Karl-Hermann Friese | 1981-05-05 |