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US09591466B2 Method and apparatus for activating an emergency beacon signal 有权
用于激活紧急信标信号的方法和装置

Method and apparatus for activating an emergency beacon signal
Abstract:
A portable communication device comprises a radio frequency signal transceiver configured to receive an instruction signal; and control electronics configured to detect that the instruction signal has been received; and cause the portable communication device to transmit a beacon signal responsive to the instruction signal being detected by the control electronics.
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