Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880446 | Process for heating up moist gases containing hydrogen halides | Wolfgang Dietz, Rudolf Gerken, Gunter Lailach | 1989-11-14 |
| 4839534 | Method and apparatus for establishing a system clock in response to the level of one of two clock signal sources | — | 1989-06-13 |