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

Boring or penetrating the earth – With tool shaft detail

Earth-boring tools having threads for affixing a body and...

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

Earth-burning bit having an improved hard-faced tooth structure

Boring or penetrating the earth – Processes

Easy break-out tool joint and method

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Easy hold power auger

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Eccentric counterbore for diamond insert stud

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Eccentric counterbore for diamond insert stud

Boring or penetrating the earth – Tool removable or insertable through or around driving or... – Laterally shiftable cutter element movable through shaft

Eccentric drilling tool

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

Eccentric rotary bit

Boring or penetrating the earth – Natural vibration characteristic of an element of boring...

Elastically vibratory longitudinal jacketed drill

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

Elastomeric seal assembly having auxiliary annular seal...

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical...

Electric horizontal directional drilling machine system

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation

Electrical imaging in conductive and non-conductive mud

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Electrical transmission apparatus through rotating tubular...

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Electrically conducting an orientation signal in a directionally

Boring or penetrating the earth – Processes – Boring with specific fluid

Electrically conductive oil-based mud

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

Electrically insulating gap subassembly for downhole electromagn

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

Electrically insulating gap subassembly for downhole...

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Electrically operated drilling method

Boring or penetrating the earth – With below-ground tool drive prime mover – With means to anchor prime movers support to bore wall

Electrically powered tractor