Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1989-05-24
1990-06-26
Luebke, Renee S.
Electricity: circuit makers and breakers
Electric switch details
Indicators
H01H 1302
Patent
active
049374087
ABSTRACT:
In a self-illuminating panel switch, a key top is supported by a front panel. The key top has a rear surface on which a character area is printed with one of a dark color or a light color, and the background area is printed with the other of a dark color and a light color. Because the printing is made on the rear or inner surface of the key top, the ink is free from wear or removal.
REFERENCES:
patent: 2953668 (1960-09-01), Bassett, Jr.
patent: 3377453 (1968-04-01), Duris
patent: 4022993 (1977-05-01), Shattuck
patent: 4262182 (1981-04-01), Basler et al.
Hattori Yoshihiro
Murakami Takashi
Tsujita Yoshihiro
Luebke Renee S.
Mitsubishi Denki & Kabushiki Kaisha
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