4. Cryptography
  5. Cryptanalysis

Arie M. Wijnen

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Anti-copying system for audio signals

Electrical audio signal processing systems and devices – With mixer
Reexamination Certificate

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Method and an apparatus for preventing unauthorized copying of v

Cryptography – Cryptanalysis
Patent

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Video camera with automatic intensity control

Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent

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Profile ID: LFUS-PAI-P-427804

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