Boring or penetrating the earth
Bit or bit element
With helical-conveying portion
Assignee
active
No affiliations
LandOfFree
Donald M. Dewar does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Donald M. Dewar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Donald M. Dewar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1908545