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2011
|
Invention
|
Down-the-hole hammer. The present invention relates to a down-the-hole hammer comprising an exter... |
|
|
Invention
|
Attachment for percussion drill tools. An attachment for a fluid-operated percussion drill tool, ... |
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2010
|
Invention
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Drill bit assembly for fluid-operated percussion drill tools. The present invention relates to a ... |
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2006
|
Invention
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Percussion hammer for enlarging drilled holes. The present invention relates to a percussion hamm... |
|
|
Invention
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Drill bit assembly for fluid-operated percussion drill tools. The invention relates to a drill bi... |
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1999
|
Invention
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Segmented ring mounting for a fluid-operated percussion drill tool. A segmented ring mounting (5)... |
