IPC Subgroup
H01T 13/52 characterised by a discharge along a surface
Introduced: September 1968
Last revised: January 2006
Full Title
Sparking plugs > characterised by a discharge along a surface
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES