Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4299597 | Process and filter control system for the cyclic counter-scavenging of diaphragm-activated filter hoses | Hans Oetiker, Emanuel Kummer, Kurt Rusterholz | 1981-11-10 |