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A rock bolt has a rectangular blade, which can pierce and shred a flexible housing, extending from cross-shaped mixing formations at one end of an elongate rod.
A rock bolt has a rectangular blade, which can pierce and shred a flexible housing, extending from cross-shaped mixing formations at one end of an elongate rod.
ROCK BOLT
NISSEN CHRISTIAN (Autor:in)
20.08.2015
Patent
Elektronische Ressource
Englisch