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PCE
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DIFF Subgroup
E21B 37/10

Well swabs

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Methods or apparatus for cleaning boreholes or wells > Well swabs

CPC:

Methods or apparatus for cleaning boreholes or wells (E21B21/00 takes precedence) > Well swabs

No child classifications to compare. This is a leaf node in both IPC and CPC.