4. Cryptography
  5. Communication system using cryptography
  6. Position dependent or authenticating

Kalevi Ratschunas

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Location dependent services

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Method and system for connecting a mobile terminal to a...

Cryptography – Communication system using cryptography – Position dependent or authenticating
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Method for calculating advice of charge

Telephonic communications – With usage measurement – Call charge metering or monitoring
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Personal organizer equipment

Communications: electrical – Condition responsive indicating system – With particular coupling link
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Profile ID: LFUS-PAI-P-2608963

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