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Home › Drilling tool, a self-drilling rock bolt, a drill bit, an anchoring device for a self-drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool

Drilling tool, a self-drilling rock bolt, a drill bit, an anchoring device for a self-drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool

US Patent 8403600 · Granted Mar 26, 2013

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