4. Telephonic communications
  5. Special services
  6. Service trigger

Richard Peter Krupka

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Method and apparatus for demonstrating telecommunications...

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Method and apparatus for demonstrating telecommunications...

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Method system and article for audibly identifying a called...

Telephonic communications – Special services – Service trigger
Reexamination Certificate

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Method, system, and article for audibly identifying a called...

Telephonic communications – Special services – Service trigger
Reexamination Certificate

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Method, system, and article for audibly identifying a called...

Telephonic communications – Special services – Service trigger
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2517158

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