DIFF Subgroup
H01T 13/04 Means providing electrical connection to sparking plugs
Introduced: September 1968
Full Title
Sparking plugs > Details > Means providing electrical connection to sparking plugs
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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- H01T 13/05 combined with interference suppressing or shielding means since 1985 IPC+CPC Available in IPC and CPC