WS

Walter Sigrist

Overall (All Time): #3,953,269 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4749537 Process for the production of formed members for the disinfection of water Kurt Gautschi 1988-06-07