LandOfFree - US Patents - Listing for Boring or penetrating the earth,With well-type screen

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Backwashing system for slurry pick-up used in hydraulic borehole

Boring or penetrating the earth – With well-type screen

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Device for drilling and draining holes in soil or rock

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Displaceable plug in a tool string filter

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Drill pipe screen

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Drilling fluid filter

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Filter for a drill string

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Filter sub

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Screened hollow stem auger for use in well drilling and testing

Boring or penetrating the earth – With well-type screen

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Tube section having slots for sampling

Boring or penetrating the earth – With well-type screen

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Two stage downhole drilling fluid filter

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well tubular, retrievable joint strainer and method

Boring or penetrating the earth – With well-type screen

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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