A borehole, as well as a method and an apparatus for forming it
A Standard patent application filed on 14 September 1989 credited to Hallundbaek, Jorgen
Details
Application number :
43259
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
A borehole, as well as a method and an apparatus for forming it