US PATENT SUBCLASS 968 / 928
.~ In which the light emitting display elements may be activated at will or are controlled in accordance with the ambient light [G04G 9/00C]
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968 /
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HOROLOGY
925
DD
VISUAL TIME- OR DATE-INDICATION MEANS [G04G 9/00]
{9}
928
.~ In which the light emitting display elements may be activated at will or are controlled in accordance with the ambient light [G04G 9/00C]
