| H | SK | ELECTRICITY |
| H05 | KL | ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR |
| H05F | UKL | STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY (electrostatic machines H02N; uses of electricity in performing operations, e.g. precipitation, see the relevant subclasses for the operations) |
| H05F 1/00 | HGR | Preventing the formation of electrostatic charges |
| H05F 1/02 | UGR1 | |
| H05F 3/00 | HGR | Carrying-off electrostatic charges (from living beings A61N 1/14) |
| H05F 3/02 | UGR1 | | . | by means of earthing connections |
|
| H05F 3/04 | UGR1 | | . | by means of spark gaps or other discharge devices (devices providing for corona discharge H01T 19/00) [2] |
|
| H05F 3/06 | UGR1 | | . | by means of ionising radiation |
|
| H05F 7/00 | HGR | Use of naturally-occurring electricity |