DIFF Subgroup
H01T 1/20 Means for starting arc or facilitating ignition of spark gap
Introduced: January 1980
Full Title
Details of spark gaps > Means for starting arc or facilitating ignition of spark gap
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 1/22 by the shape or the composition of the electrodes since 1985 IPC+CPC Available in IPC and CPC