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Official data from INPI

APERFEICOAMENTO EM DISPOSITIVO DE LUBRIFICACAO DE EIXO DE VARIADORES ELETROMAGNETICOS DE VELOCIDADE

Em AnáliseInvention Patent

Application data

Number

PI7902055

Type

Invention Patent

Filing

04/03/1979

Publication

-

Progress at the INPI

  1. Filing04/03/79
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 09/08/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

G. G. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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