Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including infra-red link with landline telephone network
Inventor
active
Battery detecting device for a radio pager
Individual radio selective calling receiver
Pager with message display function
Portable telephone having an external memory unit connector
Power supply with single DC/DC converter selectively outputting
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Profile ID: LFUS-PAI-P-333482