DS

David W. Semian

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Madison, WI: #2,790 of 4,527 inventorsTop 65%
🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%
Overall (All Time): #4,035,706 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4453052 Adjustable pressure switch Patric C. Quirke 1984-06-05