4. Telephonic communications
  5. Special services

Marc Brandt

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DTMF control

Telephonic communications – Special services – Call diversion
Reexamination Certificate

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Multiple voice channel communications

Telephonic communications – Special services
Reexamination Certificate

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Multiple voice channel communications

Telephonic communications – Special services
Reexamination Certificate

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Relating to telephone communications

Telephonic communications – Reception of calling information at substation in wireline...
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Profile ID: LFUS-PAI-P-2380938

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