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PCE
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CPC Subgroup
H01T 21/02

of sparking plugs

Full Title

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

1 direct subcode

Child Classifications

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  • H01T 21/04 Cleaning (means for self-cleaning H01T13/14; abrasive blasting devices for cleaning sparking-plugs B24C3/34)