4. Tool driving or impacting
  5. Automatic control of power operated means

James E. Lange

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Back driving automatic hammer

Tool driving or impacting – With vehicle support for drive
Patent

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Drill rig having alternate spindle drive

Tool driving or impacting – Automatic control of power operated means
Patent

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Drill rig having automatic spindle stop

Tool driving or impacting – Automatic control of power operated means
Patent

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Drill rig with carrier/mast safety interlock

Tool driving or impacting – With vehicle support for drive – Drive structure moved to nonuse position for transport
Patent

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Dry hollow stem augers

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Patent

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Profile ID: LFUS-PAI-P-563208

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