Measuring and testing
Borehole or drilling
Downhole test
Corporate Assignee
active
No affiliations
Apparatus for signalling within a borehole while drilling
Apparatus for surveying a borehole comprising a magnetic measure
Bearing sleeves
Data transmission in a drill string
Method of determining the orientation of a surveying instrument
LandOfFree
NL Sperry-Sun, Inc. does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with NL Sperry-Sun, Inc., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NL Sperry-Sun, Inc. will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-311684