4. Boring or penetrating the earth
  5. With above-ground means for handling drilling fluid or cutting
  6. With tool shaft having plural passages for drilling fluid
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9 ! " $ ' ( ) * , - / : < = > ? @ [ \ ] ^ ` { | } ~ €

Abramov Gregory J.

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Andersson Kurt

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Becker Drills, Inc.

Corporate Assignee

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Curlett Harry B.

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Farris Oscar E.

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Ford George Alan

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Harmon Robert L.

Representative

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Hughes Philip M.

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McCormick Steve H.

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McHugh Michael W.

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Minroc Technical Promotions Limited

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Moir Frederick Graham

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Morgan Alan K.

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Nielsen Larry C.

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Oy Winrock Technology, Ltd.

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Pangaea Enterprises, Inc.

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Pigott William R.

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Pool, II F. W.

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Schamburger Timothy R.

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SDS Pacific PTE, Ltd.

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