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Official data from INPI

PROCESSO PARA FAZER UM GRAMPO RESILIENTE EM FORMA DE C DUPLO

Em AnáliseInvention Patent
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Application data

Number

PI7401660

Type

Invention Patent

Filing

03/06/1974

Publication

-
View on INPI

Progress at the INPI

  1. Filing03/06/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant08/18/81
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Everts En Van Der Weijden Exploitatiemaatschappij Ewem B.V.

NL

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

F16B 2/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.4

01/03/1989

RPI 950

18.1

07/21/1987

RPI 874

18.4

02/17/1987

RPI 852

18.1

10/01/1985

RPI 780

20.4

08/27/1985

RPI 775

201

03/15/1983

RPI 647

212

01/25/1983

RPI 640

Licença voluntária — anulação

#17.2

01/11/1983

RPI 638

Pedido de licença voluntária

#17.1

09/08/1982

RPI 620

Concessão da patente

#16.1

08/18/1981

RPI 565

Carta-patente expirada

#21.1

Patente extinta em 06/03/89

07/01/2008

RPI 1956

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