LandOfFree - US Patents - Listing for Pipe joints or couplings,Particular interface

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Hopkins Howard C.

Inventor

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Hori Mitsuaki

Inventor

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Horton, Esq. Carl

Attorney

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Hosang Armin

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Howard Steven P.

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HSC. S.A.L.

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Hseih Biing-Kwang K.

Inventor

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Hub City Iron Works, Inc.

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Hughes Tool Company - USA

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Hukuda Shin-Ichi

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Huling Robert G.

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Humphreys Kevin J.

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Hunting Oilfield Services (U.K.) Limited

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Hunting Oilfield Services (UK) Limited

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Hunting Oilfield Services (UK) Ltd.

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Husebye Trygve

Inventor

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Hydril LLC

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Hymatic Clamps International Limited

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