Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Inventor
active
Earth duct tunnel enlargement apparatus and method
Telescoping frostproofing sleeve expandable to frost depths of a
No associations
LandOfFree
Michael J. Bergey does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Michael J. Bergey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Michael J. Bergey will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1337337