LOS ANGELES—Cellular Jewelry Inc. said it won a U.S. patent for its line of products that alert users when a cellular signal is received within three feet of a phone. The company’s products include pens, bracelets and watches. The items illuminate when they are within the specified distance of a ringing cellular phone. The product works with GSM, TDMA and iDEN networks, said the company.
Firm wins patent for cell-phone alert
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