4. Telephonic communications
  5. Plural exchange network or interconnection

Jerry A. Stern

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Communications system and method for operating same

Telephonic communications – Centralized switching system – Call distribution to operator
Patent

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Communications system using a central controller to control at l

Telephonic communications – Plural exchange network or interconnection
Patent

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Communications system using a central controller to control at l

Telephonic communications – Plural exchange network or interconnection
Patent

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Profile ID: LFUS-PAI-P-347926

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