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PCE
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DIFF Subgroup
H01T 21/04

Cleaning (means for self-cleaning H01T13/14; abrasive blasting devices for cleaning sparking-plugs B24C3/34)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Cleaning

CPC: Cleaning (means for self-cleaning H01T13/14; abrasive blasting devices for cleaning sparking-plugs B24C3/34)

Full Title

Full titles differ between systems:

IPC:

Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs > of sparking plugs > Cleaning

CPC:

Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs > of sparking plugs > Cleaning (means for self-cleaning H01T13/14; abrasive blasting devices for cleaning sparking-plugs B24C3/34)

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