LandOfFree - US Patents - Listing for Wells,Valves, closures or changeable restrictors

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Dailey Oil Tools, Inc.

Corporate Assignee

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Dang Hoang C.

Examiner

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Dang Hoang E.

Examiner

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Daniels Arlie H.

Inventor

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Davis Jerry B.

Inventor

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Davis Jonathan P.

Inventor

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Dawekbeit Kamal

Examiner

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Day Jeffrey D.

Inventor

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De Tuerk Alison V.

Inventor

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Deboer John M

Examiner

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Del Norte Technology, Inc.

Corporate Assignee

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Delano Charles George

Inventor

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DeMoss Edward E.

Inventor

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Diamant Boart France SA Division Petrole

Corporate Assignee

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Diamant Boart France-SA-Division Petrole

Corporate Assignee

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Diamant Boart France-SA-Petrole Division

Corporate Assignee

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Dines Christopher A.

Inventor

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Douhgerty Jennifer R.

Examiner

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Dutton Robert E.

Inventor

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