LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – Below-ground impact members – Resiliently biased

Fishing tool energizer and polymer energy storage element embodi

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Fishtail expendable diamond drag bit

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...

Fitting for controlled trajectory drilling, comprising a variabl

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...

Fitting for controlled trajectory drilling, comprising a variabl

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...

Fixed blade fixed cutter hole opener

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Fixed blade fixed cutter hole opener

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Fixed cutter bit and blade for a fixed cutter bit and...

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Fixed cutter bit with chisel or vertical cutting elements

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Fixed cutter bit with improved diamond filled compacts

Boring or penetrating the earth – Bit or bit element – Cutting edges facing in opposite axial directions

Fixed cutter bit with shear cutting gage

Boring or penetrating the earth – With bit wear signal generating

Fixed cutter drill bit

Boring or penetrating the earth – Bit or bit element – Noncutting portion forwardly of cutting portion

Fixed cutter drill bit with non-cutting erosion resistant...

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Fixed cutter drill bits with thin, integrally formed wear and er

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector

Fixed-contact stabilizer

Boring or penetrating the earth – Processes

Fixed-cutter drill bit assembly and method

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Fixed-head bit with stabilizing features

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Providing identifiable indication of core position in situ...

Fixing mechanism for a wireline core barrel of core drilling equ

Boring or penetrating the earth – With magazine for successively moving unconnected – oriented...

Fixture for the production of bores with single or double rods

Boring or penetrating the earth – Boring by directly applying heat to fluidize or comminute – Combustion is confined chamber having restricted discharge...

Flame drill channelling method and apparatus for reducing noise