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Official data from INPI

PROCESSO E SISTEMA PARA COMUTACAO DO CANAL DE ENTRADA PARA ESTACOES DIGITAIS DE PERMUTA TELEFONICA

ConcedidaInvention Patent

Application data

Number

PI8004934

Type

Invention Patent

Filing

08/10/1979

Publication

-

Progress at the INPI

  1. Filing08/10/79
  2. Publication
  3. Examination05/17/83
  4. Allowance10/18/83
  5. Grant05/29/84
  6. Terminated09/25/90

The patent was granted on 05/29/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/18/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PLESSEY CO LTD

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Inventors

C. G. (pessoa física)

M. R. (pessoa física)

P. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

09/18/1984

RPI 726

Concessão da patente

#16.1

05/29/1984

RPI 710

Republicação - classificação IPC

#15.11

02/07/1984

RPI 694

Notificação para pagamento de retribuição

#13.1

01/31/1984

RPI 693

Deferimento

#9.1

10/18/1983

RPI 678

Solicitação de exame técnico

#4.1

05/17/1983

RPI 656

14.4

08/03/1982

RPI 615

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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