4. Mining or in situ disintegration of hard material
  5. Cutter tooth or tooth head
  6. Rolling or rotatable-type bit mount

Keystone Engineering & Manufacturing Corporation

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Angular tool and holding block

Solid material comminution or disintegration – Apparatus – Comminuting elements
Reexamination Certificate

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Apparatus for roadway surface reclaiming drum

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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Cutting bit holder and support surface

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

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Double tooth cutter

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

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Flighting section and tooth holder

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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