LandOfFree - US Patents - Listing for Boring or penetrating the earth,With signaling, indicating, testing or measuring

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Obstacle detection system for underground operations

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow

Reexamination Certificate

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Oil drilling tool

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Reexamination Certificate

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Oil-based drilling fluids suitable for drilling in the presence

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

Patent

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On-bit, analog multiplexer for transmission of multi-channel...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow

Reexamination Certificate

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Open hole logging for drilling rigs

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Reexamination Certificate

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Optimized drilling with positive displacement drilling motors

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Patent

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Orientation device for a core sample

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

Reexamination Certificate

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Oriented-radial-cores retrieval for measurements of directional

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

Patent

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Orienting and circulating sub

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

Patent

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Oscillating shear valve for mud pulse telemetry

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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