Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868124 | Vapor sterilizable bioreactor | Wolfgang Rietschel, Reinhard Kiel, Winfried Kuhlmann | 1989-09-19 |
| 4844662 | Sealing barrier for subterranean purposes | Dietmar Kallinich | 1989-07-04 |