4. Boring or penetrating the earth
  5. Processes
  6. Boring curved or redirected bores

Dmitry Feldman

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Adjustable micro device feeder

Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Rotating sprocket
Reexamination Certificate

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Technique for steering a downhole hammer

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Profile ID: LFUS-PAI-P-580891

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