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PCE
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CPC Subgroup
E21B 33/129

with mechanical slips for hooking into the casing (E21B33/122, E21B33/124 take precedence)

Full Title

Sealing or packing boreholes or wells > in the borehole > Packers; Plugs (used for cementing E21B33/134, E21B33/16) > with mechanical slips for hooking into the casing (E21B33/122, E21B33/124 take precedence)

4 direct subcodes

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