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PCE
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DIFF Subgroup
E21B 33/128

with a member expanded radially by axial pressure (E21B33/122, E21B33/124 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: with a member expanded radially by axial pressure

CPC: with a member expanded radially by axial pressure (E21B33/122, E21B33/124 take precedence)

Full Title

Full titles differ between systems:

IPC:

Sealing or packing boreholes or wells > in the borehole > Packers; Plugs > with a member expanded radially by axial pressure

CPC:

Sealing or packing boreholes or wells > in the borehole > Packers; Plugs (used for cementing E21B33/134, E21B33/16) > with a member expanded radially by axial pressure (E21B33/122, E21B33/124 take precedence)

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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