METHOD OF DRIVING THE LOWER END OF A STEEL PROFILE INTO A ROCK SUBSTRATUM BY DETONATING EXPLOSIVES IN A DRILL HOLE
A Standard patent application filed on 22 December 1983 credited to Rosenstock, Winfried
Details
Application number :
22774
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
METHOD OF DRIVING THE LOWER END OF A STEEL PROFILE INTO A ROCK SUBSTRATUM BY DETONATING EXPLOSIVES IN A DRILL HOLE