4. Registers
  5. Systems controlled by data bearing records
  6. Credit or identification card systems

Joseph W. Sloan

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Prepayment metering system using encoded purchase cards

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Recording
Patent

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Prepayment metering system using encoded purchase cards from mul

Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent

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Profile ID: LFUS-PAI-P-271008

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