OB

Otto Birker

📍 Küsnacht (ZH), CH: #70 of 120 inventorsTop 60%
Overall (All Time): #3,878,699 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5024290 Sound absorbing panel for interior walls — 1991-06-18