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Official data from INPI

LIMPADOR DE AR DE DOIS ESTAGIOS;FILTROS PRINCIPAL PARA UM LIMPADOR DE AR DE DOIS ESTAGIOS;E PROCESSO PARA IMPEDIR A CONTAMINACAO DE UM FILTRO INTERNO DE SEGURANCA

ArquivadaInvention Patent

Application data

Number

PI7803131

Type

Invention Patent

Filing

05/25/1977

Publication

-

Progress at the INPI

  1. Filing05/25/77
  2. Publication
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/18/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DONALDSON CO INC

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

12/18/1984

RPI 739

Exigência - art. 36 da LPI

#6.1

04/03/1984

RPI 702

Exigência - art. 36 da LPI

#6.1

11/16/1982

RPI 630

6.2

01/19/1982

RPI 587

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