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  6. Central support has shoulders expanding sealing portion, or...
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Device for annular well isolation

Wells – Packers or plugs – Central support has shoulders expanding sealing portion – or...
Reexamination Certificate

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Double seals packers for subterranean wells

Wells – Packers or plugs – Central support has shoulders expanding sealing portion – or...
Patent

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Downhole oil well tool running and pulling with hydraulic releas

Wells – Packers or plugs – Central support has shoulders expanding sealing portion – or...
Patent

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Downhole tools having a seal ring with reinforcing element

Wells – Packers or plugs – Central support has shoulders expanding sealing portion – or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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