4. Telecommunications
  5. Radiotelephone system
  6. Usage measurement

Ben-Ren Chen

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Apparatus and method for real-time rate changes for...

Telecommunications – Radiotelephone system – Usage measurement
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Application invocation on a mobile station using messaging...

Telecommunications – Radiotelephone system – Programming control
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Position determination using almanac for virtual base stations

Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate

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Push-to-talk wireless communication for prepaid mobile...

Telecommunications – Radiotelephone system – Usage measurement
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Profile ID: LFUS-PAI-P-2633664

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