4. Telephonic communications
  5. Substation or terminal circuitry
  6. Visual signalling

Charles N. Appiah

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Access network for mobile telecommunications and method for...

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

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Acoustic guide for audio transducers

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

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Acoustical echo canceller with sub-band filtering

Telephonic communications – Subscriber line or transmission line interface – Network interface device
Patent

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Adaptive control of multiple beam communication transponders

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent

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Adaptive radio link

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-191557

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