4. Boring or penetrating the earth
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Equipment for continuous hole drilling in soil

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

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Equipment for drilling vertical boreholes

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Equipment for handling drill rods

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Equipment for raise mining

Boring or penetrating the earth – With below-ground personal accommodation
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Equipment handling apparatus

Boring or penetrating the earth – With orienting or racking means for unconnected tools or...
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Equipment to reduce torque on a drill string

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

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Erectable arm assembly for use in boreholes

Boring or penetrating the earth – Processes – Boring horizontal bores
Reexamination Certificate

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Erectable arm assembly for use in boreholes

Boring or penetrating the earth – Processes – Boring horizontal bores
Reexamination Certificate

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Erection of signs using a single vehicle

Boring or penetrating the earth – With above-ground means to advance or retract boring means
Reexamination Certificate

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Erosion resistant downhole mud diverter tool

Boring or penetrating the earth – With means movable relative to tool or shaft to control...
Patent

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Erosion resistant fluid passageways and flow tubes for...

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Reexamination Certificate

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Erosion resistant rock drill bit

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Patent

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Erosion resistent drilling head assembly

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – Rotary drive for a relatively advancing tool
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Establishing positions of locating field detectors and path...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Establishing positions of locating field detectors and path...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Establishing positions of locating field detectors and path...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Establishing positions of locating field detectors and path...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Establishing positions of locating field detectors and path...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Excavating tool

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Excavating tooth for an earth auger

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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