4. Wells
  5. Packers or plugs
  6. With expanding anchor

Otto-Ernst Glaesmann

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Tubular lost borehole closure

Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent

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Tubular one-way closure for injecting a material into a hole

Wells – Packers or plugs – With expanding anchor
Patent

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Profile ID: LFUS-PAI-P-1690741

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