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Device for feeding fluid for the spraying of picks in a shearing

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Patent

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Device for intermittently subjecting axially shiftable bits of a

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Patent

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Device for preventing ingress of dust through the annular gap be

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Patent

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Device for producing a gas-liquid mixture in the vicinity of...

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Reexamination Certificate

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Device for supplying fluid at tools for breaking solid material

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Patent

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Device for supplying fluid to a tool for breaking hard material

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Patent

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Device for supplying fluid to a tool for breaking hard material

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
Patent

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Drag bit construction

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage
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