4. Telephonic communications
  5. With usage measurement
  6. Call charge metering or monitoring

Wanda Kay Cross

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Method for accommodating multiple calling cards during a single

Telephonic communications – With check operated control – Other than coin
Patent

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Method for establishing customized billing arrangements for a ca

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

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Profile ID: LFUS-PAI-P-1476079

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