发明名称 Cellular phone blocker
摘要 the invention shows a jamming device having a transmitting system that outputs a signal frequency modulated that inhibits a low power receiving antenna from receiving a fixed frequency such as a cellular telephone. The jamming device can function as a stand alone device or be incorporated into existing electrical systems whereby energizing said electrical system will cause said jammer to inhibit the use of low power radio transmission/reception devices such as cellular phones.
申请公布号 US7123874(B1) 申请公布日期 2006.10.17
申请号 US20010014034 申请日期 2001.12.10
申请人 BRENNAN JOSEPH P 发明人 BRENNAN JOSEPH P
分类号 H04K3/00 主分类号 H04K3/00
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