ELECTRIC CLOCK
PURPOSE:To obtain a colorful digital watch which indicates days of a week et al. with differnt colors respectively by taking advantage of the charateristics of electrochromism substances to record and to color.
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To obtain a colorful digital watch which indicates days of a week et al. with differnt colors respectively by taking advantage of the charateristics of electrochromism substances to record and to color. |
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