4. Telephonic communications
  5. Multi-line or key substation system with selective switching...
  6. Switching or supervision feature

Jung-Sup Lee

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Method for interfacing between a key-phone system and a key-phon

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature
Patent

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Packet data transmitting method in a CDMA mobile...

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate

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Packet data transmitting method in a CDMA mobile...

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-138590

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