Patents/Inventors

Hanspeter Frehner

SevelenCH2 patents

3 Patents

US124220562025
Valve, in Particular a Vacuum Valve
VAT Holding AG
0 cites
US122415562025
Vacuum Valve for Providing a Symmetrical Fluid Flow
VAT HOLDING AG
0 cites
US119060662024
Seal Support Ring for a Valve
Vat Holding AG
0 cites