4. Boring or penetrating the earth
  5. Bit or bit element
  6. Rolling cutter bit or rolling cutter bit element
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Estes Roy Dee

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Evans Stephen M.

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Evans Stephen Martin

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Excavation Engineering Associates, Inc.

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Eyre Ron K.

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Fang Zhlgang

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Favreau Richard F.

Examiner

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Fayaud Patrick

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Felderhoff Floyd

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Felderhoff Floyd C.

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Felsman Robert A.

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Forrest Robert S.

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Foster-Miller Associates, Inc.

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Four E Inc.

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Frankel Kenneth A.

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Fuller Dennis D.

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Furre Arnold

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Gallego Gilles J-P

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Gallifet Thomas

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Garcia Gary E.

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