LandOfFree - US Patents - Listing for Mining or in situ disintegration of hard material

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Tunnel or road header

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter shiftable horizontally

Patent

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Tunnel profile control

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

Patent

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Tunnel-boring machine and method of using the same

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Reexamination Certificate

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Tunnel-excavating machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Patent

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Tunnel-excavating machine with shield formed of segments

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

Patent

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Tunneling equipment

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means

Patent

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Tunneling machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Patent

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Tunneling machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Patent

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Tunneling machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means

Patent

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Tunneling machine having liquid balance low flow slurry system

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means

Patent

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Tunneling machine rotatable member

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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Tunneling machine with center cutter and debris removing means

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...

Patent

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Tunneling machine with massive guide for impact tools

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Patent

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Tunneling machine with plural adjustable arms carrying single cu

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...

Patent

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Tunneling machine with radially sweeping tool carriers

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...

Patent

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Tunneling machines and other cutting machines

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...

Patent

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Tunneling shield

Mining or in situ disintegration of hard material – Processes – Forming blocks

Patent

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Tunneling system

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Patent

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Tunnelling apparatus

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means

Patent

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Tunnelling head and method

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...

Patent

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