IPC Subgroup
H01T 13/28 having spherically shaped electrodes, e.g. ball-shaped
Introduced: September 1968
Last revised: January 2006
Full Title
Sparking plugs > characterised by features of the electrodes or insulation > having spherically shaped electrodes, e.g. ball-shaped
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
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- H01T 13/3 mounted so as to permit free movement