4. Cryptography
  5. Having production of printed copy

Arndt Berthold

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Method and apparatus for automatically recognizing a modem type

Pulse or digital communications – Transceivers – Modems
Patent

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Method of improving the security of postage meter machines

Cryptography – Having production of printed copy
Patent

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Program-controlled household appliance

Communications: electrical – Visual indication
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1370723

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