4. Telephonic communications
  5. With usage measurement
  6. Call charge metering or monitoring
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Drive-in restaurant credit-card transaction system

Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate

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Dual channel ISDN terminal call identification and switching sys

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Dynamic carrier selection

Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate

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Dynamic charging for telecommunications services in accordance w

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Dynamic individual phone rates

Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate

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