DS

Donald James Sheen

📍 Leduc, CA: #2 of 13 inventorsTop 20%
Overall (2019): #482,182 of 560,194Top 90%
1
Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10508496 Downhole vibration tool David Kutinsky, Darren William Sallis 2019-12-17