发明名称 |
PUBLIC ADDRESS SYSTEM USING WIRELESS MOBILE COMMUNICATION DEVICES |
摘要 |
A public address system is set forth, comprising at least one wireless mobile communication device; a sound system; and a back-end system for selectively receiving a wireless signal from the wireless mobile communication device and transmitting the signal to the sound system for broadcast. |
申请公布号 |
US2010215187(A1) |
申请公布日期 |
2010.08.26 |
申请号 |
US20090393870 |
申请日期 |
2009.02.26 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
MOOSAVI VAHID;WILSON SEAN;ROSE SCOTT |
分类号 |
H04R27/00 |
主分类号 |
H04R27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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