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Official data from INPI

SISTEMA DE ACOPLAMENTO DE TWEETER

Arquivada/ExtintaUtility Model
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Application data

Number

MU5800124

Type

Utility Model

Filing

01/31/1978

Publication

-
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Progress at the INPI

  1. Filing01/31/78
  2. Publication
  3. Examination
  4. Allowance12/13/83
  5. Grant03/25/86
  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.

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Latest action published by the INPI: 08/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ARLEN SA IND COM ELETRONICA

Inventors

P. D. (pessoa física)

Technical data

IPC Classification

H04R 5/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

08/16/1988

RPI 930

14.7

12/09/1986

RPI 842

Concessão da patente

#16.1

03/25/1986

RPI 805

110

11/05/1985

RPI 785

Recurso

#12.1

03/27/1984

RPI 701

Deferimento

#9.1

12/13/1983

RPI 686

Exigência - art. 36 da LPI

#6.1

07/05/1983

RPI 663

14.7

11/09/1982

RPI 629

Exigência - art. 36 da LPI

#6.1

03/16/1982

RPI 595

Related

From the same holder

POLO PARA ALTO-FALANTES

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