Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
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9/00
Details of switching devices, not covered by groups H01H1/00 - H01H7/00
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H01H9/18
Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
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H01H9/182
Illumination of the symbols or distinguishing marks
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