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Rotatable tool assembly

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Wear shield or replaceable wear sleeve
Reexamination Certificate

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Rotatable tool assembly

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Rolling or rotatable-type bit mount
Reexamination Certificate

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Rotatable tool having a carbide insert with bumps

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

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Rotating cutter head

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent

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Rotating cutting drum having tapered and curved conveying surfac

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

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Rotationally and axially movable bit

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent

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Rough cutter mining tool

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent

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Round cutting tool

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

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Round shaft chisel

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Rolling or rotatable-type bit mount
Reexamination Certificate

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Round-shaft cutter

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Insert or tip mounting feature
Reexamination Certificate

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Round-shank bit for a coal cutting machine

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Rolling or rotatable bit
Reexamination Certificate

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