DK

David A. Krol

GD Gulf Research & Development: 1 patents #73 of 106Top 70%
📍 Pittsburgh, PA: #4,559 of 7,570 inventorsTop 65%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,007,904 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4491181 Method of freeing stuck drill string using spotting fluid — 1985-01-01