4. Telecommunications
  5. Radiotelephone system
  6. Security or fraud prevention

Robert L. Engelhart

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Biometric authentication of a wireless device user

Telecommunications – Radiotelephone system – Security or fraud prevention
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Prepaid communication services utilizing a prepaid...

Telecommunications – Radiotelephone system – Security or fraud prevention
Reexamination Certificate

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Prepaid telecommunication system

Telecommunications – Radiotelephone system – Usage measurement
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Secure online purchasing

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Finance
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Secure online purchasing

Data processing: financial – business practice – management – or co – Business processing using cryptography – Secure transaction
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Profile ID: LFUS-PAI-P-2218283

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