Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866996 | Sample metering valve for a sample preparation system | Andre J. Nohl, Vance J. Nau | 1989-09-19 |
| 4859605 | Process for preparation of samples for analysis | Peter Grimm, Andre J. Nohl, Vance J. Nau | 1989-08-22 |
| 4836037 | Sample metering valve for a sample preparation system | Andre J. Nohl, Vance J. Nau | 1989-06-06 |
| 4823622 | Sample metering valve for a sample preparation system | Andre J. Nohl, Vance J. Nau | 1989-04-25 |