DC

Donald A. Crawshaw

📍 Wellesley, MA: #579 of 837 inventorsTop 70%
🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #3,854,304 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5127768 Recirculating soil gas reduction system Geoffrey Crawshaw 1992-07-07