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Official data from INPI

SISTEMA PORTATIL DECODIFICADOR-CODIFICADOR DE SOM ACOPLADO COM RADIOTELEFONICO RECEPTOR E TRANSMISSOR DE DADOS

ConcedidaInvention Patent

Application data

Number

PI7406893

Type

Invention Patent

Filing

08/20/1974

Publication

-

Progress at the INPI

  1. Filing08/20/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant11/11/80
  6. Expired11/24/92

The letters patent expired on 11/24/1992: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/11/1980. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. C. (pessoa física)

US

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/11/1980

RPI 525

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: H03K 13/00; H04B 7/00; H04L 3/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

11/24/1992

RPI 1147

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