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Official data from INPI

DISPOSITIVO DE TRANSMISSAO DE SINAIS ELETRICOS ENTRE ORGAOS DE SINALIZACAO MOVEIS E ESTACIONARIOS

Em AnáliseInvention Patent

Application data

Number

PI7807460

Type

Invention Patent

Filing

01/13/1978

Publication

-

Progress at the INPI

  1. Filing01/13/78
  2. Publication
  3. Examination
  4. Allowance03/02/82
  5. Grant
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 06/22/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ZELLWEGER USTER AG

Inventors

No inventors listed.

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

06/22/1982

RPI 609

Deferimento

#9.1

03/02/1982

RPI 593

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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