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Official data from INPI

DISPOSICAO CONSTRUTIVA EM CHUMBADOR DE DUPLA OU MULTIPLA EXPANSAO

ConcedidaUtility Model

Application data

Number

MU6500695

Type

Utility Model

Filing

05/28/1985

Publication

06/16/1987

Progress at the INPI

  1. Filing05/28/85
  2. Publication06/16/87
  3. Examination08/18/87
  4. Allowance04/26/88
  5. Grant02/28/89
  6. Expired06/06/95

The letters patent expired on 06/06/1995: 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: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BOLLHOFF IND LTDA [BR]

Inventors

B. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1989

RPI 958

Notificação para pagamento de retribuição

#13.1

08/09/1988

RPI 929

Deferimento

#9.1

04/26/1988

RPI 914

Solicitação de exame técnico

#4.1

08/18/1987

RPI 878

Publicação do pedido de patente

#3.1

06/16/1987

RPI 869

14.7

03/17/1987

RPI 856

14.4

03/10/1987

RPI 855

Pedido de patente depositado

#2.1

08/13/1985

RPI 773

Carta-patente expirada

#21.1

06/06/1995

RPI 1279

20.7

05/15/1990

RPI 1018

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