4. Electrical computers and digital processing systems: support
  5. Multiple computer communication using cryptography
  6. Particular communication authentication technique

Steven M. Blumenfeld

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Electronic loose-leaf remote control for enabling access to...

Information security – Access control or authentication – Network
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Electronic media player with metadata based control and...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Electronic media player with metadata based control and...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate

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Out-of-band tokens for rights access

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate

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Out-of-band tokens for rights access

Information security – Access control or authentication – Stand-alone
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Profile ID: LFUS-PAI-P-2375376

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