发明名称 Filtered wireless communications
摘要 In accordance with the principles of the present invention, a wireless virtual phone booth is provided within a filtered wireless zone. A filtered wireless zone is provided. A geographically limited signal is contained within the filtered wireless zone. When a handset in the filtered wireless zone attempts to place a call, the call attempt is blocked. In addition, a handset in the geographically limited signal contained within the filtered wireless zone is allowed to place calls.
申请公布号 US2007111722(A1) 申请公布日期 2007.05.17
申请号 US20060637647 申请日期 2006.12.12
申请人 FREEBURG THOMAS A 发明人 FREEBURG THOMAS A.
分类号 H04W4/12;H04W4/16;H04W4/22;H04W48/04 主分类号 H04W4/12
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