4. Data processing: measuring, calibrating, or testing
  5. Measurement system in a specific environment
  6. Earth science

Weatherford/Lamb

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Downhole filter

Wells – Screens – Woven mesh
Reexamination Certificate

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Expandable tubulars

Wells – Expansible anchor or casing – Expansible casing
Reexamination Certificate

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Method for extracting coal bed methane with source fluid...

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

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Method of using underbalanced well data for seismic...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate

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Tubing injector

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2745177

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