Patent · US Expired

Portable radiotelephone and radiocommunication system including such a radiotelephone

US7142826B2 · kind B2 · utility

2Cited by
6References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 24, 2003
Grant dateNov 28, 2006
Priority date
Expiry dateFeb 14, 2024

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04M1/2749
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

Portable radiotelephone including a central processing unit, a transmit and receive radio circuit connected to at least one antenna, a microphone emerging upwards when the radiotelephone is worn by means of a necklace, a speaker and a keypad that includes at least one multifunction key.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.