4. Telecommunications
  5. Radiotelephone system
  6. Special service

Dirk Wierzbitzki

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Sequential calling system with prioritization of the last...

Telephonic communications – Special services – Call diversion
Reexamination Certificate

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SMS-supported method for online/offline detection of user...

Telecommunications – Radiotelephone system – Special service
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2674707

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