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Official data from INPI

SISTEMA DE COMUTACAO DE COMUNICACOES

Em AnáliseInvention Patent
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Application data

Number

PI7701434

Type

Invention Patent

Filing

03/10/1976

Publication

-
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Progress at the INPI

  1. Filing03/10/76
  2. Publication
  3. Examination
  4. Allowance04/13/82
  5. Grant
  6. Terminated12/08/87

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

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Latest action published by the INPI: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CHESTEL INC

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/08/1987

RPI 894

Notificação para pagamento de retribuição

#13.1

08/03/1982

RPI 615

Deferimento

#9.1

04/13/1982

RPI 599

15.0

12/01/1981

RPI 580

Exigência - art. 36 da LPI

#6.1

11/10/1981

RPI 577

Deferimento

#9.1

10/20/1981

RPI 574

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