Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824639 | Test device and a method for the detection of a component of a liquid sample | Karlheinz Hildenbrand, Hermann Perrey, Georg Frank, Rolf Dhein | 1989-04-25 |
| 4824640 | Transparent test strip system | Karlheinz Hildenbrand, Hermann Perrey, Klaus Wehling | 1989-04-25 |