Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4487740 | Procedure and equipment for injecting gas into liquids | Max Stiefel | 1984-12-11 |
| 4282062 | Procedure and equipment for injecting gas into liquids | Max Stiefel | 1981-08-04 |