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Official data from INPI

APERFEICOAMENTOS EM VALVULA DE ALIVIO/COMPENSACAO PARA SISTEMA SEMI-SELADO,ACOPLADO NA TAMPA DO RESERVATORIO PARA FLUIDO DE FREIO

Arquivada/ExtintaUtility Model

Application data

Number

MU5701240

Type

Utility Model

Filing

09/30/1977

Publication

-

Progress at the INPI

  1. Filing09/30/77
  2. Publication
  3. Examination
  4. Allowance03/22/83
  5. Grant11/29/83
  6. Expired08/16/88

The letters patent expired on 08/16/1988: 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: 08/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

VARGA MAQUINAS SA

Inventors

C. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

08/16/1988

RPI 930

20.4

05/07/1985

RPI 759

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

08/02/1983

RPI 667

Deferimento

#9.1

03/22/1983

RPI 648

Exigência - art. 36 da LPI

#6.1

10/05/1982

RPI 624

Exigência - art. 36 da LPI

#6.1

02/24/1982

RPI 592

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