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Coal combine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
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Coal comminution and recovery process using gas drying

Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Dissolving or chemical reaction
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Coal cutter vehicle

Mining or in situ disintegration of hard material – Processes – Forming blocks
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Coal disaggregation by basic aqueous solution for slurry recover

Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
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Coal extraction in a longwall working

Mining or in situ disintegration of hard material – Processes – Explosive
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Coal face support in a mine

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine
Reexamination Certificate

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Coal mining apparatus and method

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Coal mining auger

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Adjustable head
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Coal mining drum with adjustable linier edge cutters

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
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Coal mining machine cutter with noise suppressant and flame resi

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
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Coal mining method at a long-walled pit face of the coal mine

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Coal plane with chain operated turning head

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
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Coal planer

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
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Coal planer control device

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
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Coal plough having separately adjustable cutters and flexible fl

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
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Coal plow cutter

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Planar type bit
Reexamination Certificate

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Coal plow cutter

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Planar type bit
Reexamination Certificate

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Coal seam discontinuity sensor and method for coal mining appara

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine
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Coal shaver

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
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Coal shaver

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
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