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Official data from INPI

APERFEIÇOAMENTO EM ALTO-FALANTE

PublicadaUtility Model
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Application data

Number

MU6800398

Type

Utility Model

Filing

02/29/1988

Publication

10/03/1989
View on INPI

Progress at the INPI

  1. Filing02/29/88
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. In force

The application was filed at the INPI on 02/29/1988. It awaits formal examination and publication in the RPI gazette.

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Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. R. (pessoa física)

SP, BR

Inventors

P. R. (pessoa física)

BR

Technical data

IPC Classification

H04R 19/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/03/1989

RPI 989

Pedido de patente depositado

#2.1

05/24/1988

RPI 918

Retificação

#15.3

04/20/1993

RPI 1168

Pedido de certificado de adição de invenção

#5.1

07/23/1991

RPI 1077

Pedido de certificado de adição de invenção

#5.1

05/14/1991

RPI 1067

Solicitação de exame técnico

#4.1

03/12/1991

RPI 1058

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