DIFF Subgroup
H05F 3/04 by means of spark gaps or other discharge devices (devices providing for corona discharge per se H01T19/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: by means of spark gaps or other discharge devices
CPC: by means of spark gaps or other discharge devices (devices providing for corona discharge per se H01T19/00)
Full Title
Full titles differ between systems:
IPC:
Carrying-off electrostatic charges > by means of spark gaps or other discharge devices
CPC:
Carrying-off electrostatic charges (; from living beings A61N1/14; ) > by means of spark gaps or other discharge devices (devices providing for corona discharge per se H01T19/00)
No child classifications to compare. This is a leaf node in both IPC and CPC.