4. Pipe joints or couplings
  5. For branched path
  6. T-type

Theodore J. Roscoe, Jr.

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Core bit

Boring or penetrating the earth – Bit or bit element – Core forming type
Patent

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Dual concentric pipes

Pipe joints or couplings – For branched path – T-type
Patent

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Percussive air hammer and core bit apparatus

Boring or penetrating the earth – With below-ground tool drive prime mover – Discharge passage for motive fluid directed toward bore...
Patent

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Swivel for core drilling

Pumps – Motor driven – Fluid motor
Patent

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Profile ID: LFUS-PAI-P-783245

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