DIFF Subgroup
B08B 9/02 Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Cleaning pipes or tubes or systems of pipes or tubes
CPC: Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
Full Title
Full titles differ between systems:
IPC:
Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning pipes or tubes or systems of pipes or tubes
CPC:
Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2000.
Child Classifications
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- B08B 9/027 Cleaning the internal surfaces; Removal of blockages since 2000 IPC+CPC Available in IPC and CPC