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

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Mechanically actuated impact mechanism

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

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Mechanism for advancing continuous mining machine through mining

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

Patent

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Mechanism for controlling the elevation of a coal planer

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

Patent

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Mechanism for guiding a coal planer on the trough of a scraper c

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

Patent

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Mechanisms for drawing a chain into or through a channel of a ch

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

Patent

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Mechanized scaling bar

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

Patent

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Metal detector for a milling machine

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

Reexamination Certificate

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Metal particle recovery at sub-surface locations

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

Patent

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Metal value recovery

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

Patent

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Method and a machine for advancing an underground face of a geol

Mining or in situ disintegration of hard material – Processes – Explosive

Patent

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Method and apparatus for a plasma-hydraulic continuous...

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

Reexamination Certificate

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Method and apparatus for a rotating cutting drum or arm mounted

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Ore/rock interface determination during cutting

Patent

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Method and apparatus for advancing and supporting an underground

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

Patent

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Method and apparatus for automatically controlling a mining mach

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of tunneling apparatus having a wall temporary support

Patent

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Method and apparatus for blasting hard rock

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

Patent

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Method and apparatus for boring and shearing of rocks

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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Method and apparatus for breaking a hard compact material such a

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

Patent

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Method and apparatus for breaking concrete or the like

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

Patent

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Method and apparatus for breaking hard compact material such as

Mining or in situ disintegration of hard material – Processes

Patent

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Method and apparatus for channel cutting of hard materials using

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid

Patent

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