Oi SA - Company Profile

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Oi SA: Patents

View up-to-date information on Oi SA patents, including inventor and filing insights.

Publication Identifier	Document Type	Title	Classification-CPC	Publication Date
BRPI0902036B1	Grant	sistema e método de autenticação para interconexão de redes sem fio heterogêneas	H04W36/18	May 04, 2021
BR102019001041A2	Application	telefone com dispositivo de envio de alarmes, de monitoramento de disponibilidade e de atualização de dados via rede celular para telefone de uso público	H04M3/08	August 04, 2020
BRPI0504288B1	Grant	sistema de envio de eventos e terminal receptor de eventos		June 05, 2018
BRPI0503637B1	Grant	sistema de telefonia pré-paga e processo para a realização de uma chamada usando créditos associados a uma conta de telefonia pré-paga		May 08, 2018
BRPI0400941B1	Grant	controlador de sinalização de redes de telecomunicações com serviços de aplicação integrados e respectivo método para disponibilizar os serviços		February 14, 2018

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