Wells
Processes
With indicating, testing, measuring or locating
Representative
active
No affiliations
Drill pipe protector
Guide head for pipe rackers
Head for pipe rackers
Method of making lightweight cement slurries and their uses
Method of manufacturing elevator links and a cast elevator link
LandOfFree
John O. Evans, Jr. does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with John O. Evans, Jr., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and John O. Evans, Jr. will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-151034