HE

Harold J. Engebretson

SI Scientific Drilling International: 1 patents #1 of 3Top 35%
📍 Yorba Linda, CA: #7 of 44 inventorsTop 20%
🗺 California: #3,049 of 13,957 inventorsTop 25%
Overall (1994): #129,327 of 165,921Top 80%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5321893 Calibration correction method for magnetic survey tools — 1994-06-21