LandOfFree - US Patents - Listing for Boring or penetrating the earth,Bit or bit element

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

Polycrystalline ultra-hard compact constructions

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

Portable handheld drilling apparatus

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

Predominantly diamond cutting structures for earth boring

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

Preform cutting elements for rotary drag-type drill bits

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

Preform cutting elements for rotary drill bits

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

Preform cutting elements for rotary drill bits

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

Preform elements and mountings therefor

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

Preformed tooth for tooth bit

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

Prevention of cone seal failures in rock bits

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

Protected cutter mounting for drill bits

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

Protective overlay coating for PDC drill bits

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

Protector for rock bit seals

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

Quadrapod auger support

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

Radial crest insert

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

Radial cut drill bit insert

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

Radial force anti-extrusion device for sealed drill string unit

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

Raise bit with cutters stepped in a spiral and flywheel

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

Raise boring head having fluid traversing means

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

Raise drill bit inboard cutter assembly