DB

David E. Bigelow

CF Construction Forms: 1 patents #6 of 15Top 40%
📍 Milwaukee, WI: #1,543 of 2,770 inventorsTop 60%
🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%
Overall (All Time): #4,031,298 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4437646 Discharge valve for concrete pumping apparatus Terry D. Timmerman 1984-03-20