4. Telecommunications
  5. Radiotelephone system
  6. Usage measurement

Robert P. Engfer

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Apparatus for automatically notifying operating system level...

Electrical computers and digital data processing systems: input/ – Interrupt processing
Reexamination Certificate

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Cellular telephone management system

Telecommunications – Radiotelephone system – Usage measurement
Patent

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Technique to automatically notify an operating system level...

Electrical computers and digital data processing systems: input/ – Interrupt processing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-160036

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