DIFF Subgroup
E21B 23/06 for setting packers
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells > for setting packers
CPC:
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10) > for setting packers
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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