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An adjustable drawing die for multi-cornered semi-finished material
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Rock drilling machine
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Briquette mold
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Striking mechanism for drills, hammer drills, demolition hammers, etc. like
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Chisel with prismatic carbide insert
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Improvements in or relating to movable mineral-boring (rock drilling) apparatus for mining operations
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Improvements in or relating to drilling machines with combined rotary and impact action
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