Communications: electrical – Systems – Signal light systems
Patent
1989-08-14
1992-04-07
Ng, Jin F.
Communications: electrical
Systems
Signal light systems
34028601, 34028607, 340326, G08B 500
Patent
active
051032040
ABSTRACT:
A portable visual signalling device consists of a plurality of different colored lights and a plurality of switches in a housing. Each light may correspond to a specific designation. The device is powered by a self contained rechargeable battery and recharging circuitry. A switch can be flipped to activate a colored light and provide a visible message. It does not have to be professionally installed. The device can be moved easily from place to place if needed. One or more lights can be activated by remote control. A buzzer may also be activated with one of the lights.
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Linear Databook, National Semiconductor Corporation 2900 Semiconductor Drive Santa Clara, Calif., pp. 1, 2 and 9-33 to 9-38.
Ng Jin F.
Swarthout Brent A.
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