4. Cryptography
  5. Electric signal modification
  6. Having production of printed copy

John M. Hovey

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Biased-bit generator

Registers – Transfer mechanism – Traveling pawl
Patent

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IFF authentication system

Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Iff or sif
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Switching matrix

Cryptography – Electric signal modification – Having production of printed copy
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Profile ID: LFUS-PAI-P-191752

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