A method and a device for feeding concrete into a drill hole in the concrete bolting of a rock
A Standard patent application filed on 14 October 1986 credited to Leppanen, Jarmo
Details
Application number :
63884
Application type :
Standard
Application status :
CEASED
Under opposition :
No
Proceeding type :
Invention title :
A method and a device for feeding concrete into a drill hole in the concrete bolting of a rock