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PCE
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IPC Subgroup
H01K 9/02

to provide substitution in the event of failure of one of the bodies

Introduced: September 1968

Last revised: January 2006

Full Title

Lamps having two or more incandescent bodies separately heated > to provide substitution in the event of failure of one of the bodies

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
ELECTRIC INCANDESCENT LAMPS

2 direct subcodes

Child Classifications

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  • H01K 9/04 with built-in manually-operated switch
  • H01K 9/06 with built-in device, e.g. switch, for automatically completing circuit of reserve body