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Official data from INPI

APERFEIÇOAMENTO EM DISPOSITIVO BLOQUEADOR DA ORIGINAÇÃO DE CHAMADAS INTERURBANAS A PARTIR DE UMA LINHA TELEFÔNICA COM INVERSÃO AUTOMÁTICA DE POLARIDADE.

Em AnáliseInvention Patent

Application data

Number

PI8606267

Type

Invention Patent

Filing

12/18/1986

Publication

07/05/1988

Progress at the INPI

Under appeal
  1. Filing12/18/86
  2. Publication07/05/88
  3. Examination10/18/88
  4. Refused09/25/90
  5. Grant
  6. In force

The application was refused by the INPI on 09/25/1990. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ITM - Inter Técnica Micron Industria e Comercio LTDA.

SP, BR

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Inventors

D. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/18/1988

RPI 939

Publicação do pedido de patente

#3.1

07/05/1988

RPI 924

Pedido de patente depositado

#2.1

04/28/1987

RPI 862

Indeferimento

#9.2

09/25/1990

RPI 1034

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