H05F

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Description

STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY (electrostatic machines H02N; uses of electricity in performing operations, e.g. precipitation, see the relevant subclasses for the operations)

Subclasses

SubclassTitle
1/00 Preventing the formation of electrostatic charges
1/02 Preventing the formation of electrostatic charges by surface treatment
3/00 Carrying-off electrostatic charges (from living beings A61N 1/14)
3/02 Carrying-off electrostatic charges (from living beings A61N 1/14) by means of earthing connections
3/04 Carrying-off electrostatic charges (from living beings A61N 1/14) by means of spark gaps or other discharge devices (devices providing for corona discharge H01T 19/00)
3/06 Carrying-off electrostatic charges (from living beings A61N 1/14) by means of ionising radiation
7/00 Use of naturally-occurring electricity

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