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2013
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Invention
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Method for surveying drill holes, drilling arrangement, and borehole survey assembly. The inventi... |
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2011
|
Invention
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Drill assembly.
Drill assembly for making a hole into a soil or rock which arrangement comprises... |
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Invention
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Drill assembly. Drill assembly for making a hole into a soil or rock which arrangement comprises ... |
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2008
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Invention
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Bit assembly.
A bit assembly in a drilling apparatus working by hammering and for rotating said ... |
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Invention
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Bit assembly. A bit assembly in a drilling apparatus working by hammering and /or rotating said a... |
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Invention
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Method for manufacturing a ring bit for a drilling device. Method for manufacturing a sleeve like... |
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2003
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Invention
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Bit assembly. A bit assembly for a drilling apparatus working by impact and rotation or merely by... |
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Invention
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Bit assembly. A bit assembly for a drilling apparatus working by impact and rotation or mer... |
