LandOfFree - US Patents - Listing for Wells

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Downhole Systems Technology Canada

Corporate Assignee

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Downhole Systems, Inc.

Corporate Assignee

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Downie R. James

Inventor

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Downs Charles E.

Inventor

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Downs Wayne C.

Inventor

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Dozier Jan D.

Inventor

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Drablier Didier

Inventor

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Drake Charles

Assignee

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Drake Charles W.

Inventor

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Drakeley Brian K.

Inventor

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Drakeley Brian Keith

Inventor

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Draper Robert B.

Inventor

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Drechsler Jan

Inventor

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Dreggevik Mikal

Inventor

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Dreher Karl D.

Inventor

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Dreher, Jr. Wayne Reid

Inventor

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Dresser Oil Tools Division of Dresser Industries, Inc.

Corporate Assignee

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Drexel Equipment (U.K.) Limited

Corporate Assignee

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Drexel Equipment (UK) Limited

Corporate Assignee

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Dria Dennis Edward

Inventor

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