4. Telephonic communications
  5. With check operated control
  6. Other than coin

Leonard Matulewski

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Combination pre-paid and calling card

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

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Combination pre-paid and calling card

Telephonic communications – With check operated control – Other than coin
Reexamination Certificate

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Communications system and method with call expenditure control

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

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Profile ID: LFUS-PAI-P-1774413

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