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

Robert L. Harmon

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Bit packer for dual tube drilling

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – With tool shaft having plural passages for drilling fluid
Patent

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Cable-clamping device with adjusting means

Buckles – buttons – clasps – etc. – Cord and rope holders – Pivoted part
Patent

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Clamping device with adjusting ring

Buckles – buttons – clasps – etc. – Cord and rope holders – Pivoted part
Patent

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Profile ID: LFUS-PAI-P-405641

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