US Patent 6856819 Portable wireless unit
Patent 6856819 was granted and assigned to NEC on February, 2005 by the United States Patent and Trademark Office.
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Patent abstract
A portable wireless unit of the invention has a first plane antenna smaller than an antenna size determined by a desired frequency, and a second plane antenna presenting an antenna size determined by the desired frequency on the whole by coupling with the first plane antenna.
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Patent Inventor Names
Ryoh Itoh0
Date of Patent
February 15, 2005
0Patent Application Number
098005380
Date Filed
March 7, 2001
0Patent Primary Examiner
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US Patent 6856819 Portable wireless unit
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