4. Telephonic communications
  5. With check operated control
  6. Fraud or interference prevention

Daniel Warren Macauley

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Coin telephone data port protection

Telephonic communications – With check operated control – Fraud or interference prevention
Patent

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Coin telephone protection device

Telephonic communications – Terminal accessory or auxiliary equipment – Protective structure
Patent

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Display panel overlay structure and method for tracing...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line
Reexamination Certificate

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Method and device for detecting the presence of a patch cord...

Telephonic communications – Centralized switching system – Structure of equipment
Reexamination Certificate

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Method and device for detecting the presence of a patch cord...

Electrical connectors – With indicating or identifying provision – Connection indicating provision
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1868375

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