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

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Endless bucket type excavator

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working

Patent

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Endless chains comprised of interdigitated link elements having

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Endless-chain type head

Patent

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Endless chains comprised of interdigitated link elements having

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Endless-chain type head

Patent

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Energy conserving mining system and method

Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells

Patent

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Energy supply unit for winning machines pulled by a traction mec

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working

Patent

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Enhancing liquid jet erosion

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

Patent

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Equipment and method for measuring convergence

Mining or in situ disintegration of hard material – Processes – Mine safety

Patent

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Equipment for extracting ores from sea beds

Mining or in situ disintegration of hard material – With separation of materials – Separation below surface of earth or water

Patent

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Equipment for laying a layer of elongate material

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

Patent

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Equipment for laying elongate material

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

Patent

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Equipment for laying elongate material

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

Patent

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Equipment for shortwall mining useful for extraction of pillars

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

Patent

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Equipment useful for winning ores particularly coal in longwall

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

Patent

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Equipments for cold milling of the road surface

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working

Reexamination Certificate

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Erosion resistant cutting bit with hardfacing

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

Patent

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Ethanolamine in a method of recovering coal in aqueous slurry fo

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

Patent

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Excavating apparatus with adjustable breaker bar

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

Patent

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Excavating bit

Mining or in situ disintegration of hard material – Miscellaneous

Patent

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Excavating head with pick-controlled water supply

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

Patent

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Excavating machine

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

Patent

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