4. Telephonic communications
  5. Supervisory or control line signaling
  6. Using line or loop condition detection

Seog-Geun Lee

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Apparatus for automatically recovering speech path of telephone

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent

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Backlighting device for dual liquid crystal display and...

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate

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Device and method for using a rotating key and controlling a...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Method and apparatus for adjusting level of alert sound in...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Method for saving power in a wireless telephone

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1400156

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