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

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Excavating machine equipped with an attachment for scraper activ

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Percussive-type cutter

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Excavating machines

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

Patent

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Excavating machines

Mining or in situ disintegration of hard material – Processes – With material-handling

Patent

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Excavating machines for excavating rock and minerals having firs

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

Patent

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Excavating machines for tunneling with template fixed to boom

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

Patent

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Excavating tool cutting insert

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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Excavating tool cutting insert

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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Excavation and road maintenance bits and blocks

Mining or in situ disintegration of hard material – Miscellaneous

Patent

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Excavation apparatus and method

Mining or in situ disintegration of hard material – Processes

Reexamination Certificate

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Excavation machine for hard rock mining

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

Reexamination Certificate

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Excavation machine having combined impact hammers and static rip

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Percussive-type cutter

Patent

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Excavator and conveyor of an underground pipeline jacking appara

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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Excavator for use in a tunneling shield

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

Patent

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Excavator, particularly for continuous strip mining of minerals

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means

Patent

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Excavators

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Remote control

Patent

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Excavatory machine for use in coal and other mining opertions

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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Expansible apparatus for removing the surface layer from a concr

Mining or in situ disintegration of hard material – Expansible breaking-down devices – Wedge

Patent

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Expansion fracture device

Mining or in situ disintegration of hard material – Expansible breaking-down devices – Fluid-pressed element

Patent

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Explosive expansion of formation in lifts for forming an in situ

Mining or in situ disintegration of hard material – Tunnel recovery of fluid material

Patent

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Explosive expansion to a limited void with uniform scaled depth

Mining or in situ disintegration of hard material – Tunnel recovery of fluid material

Patent

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