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Official data from INPI

APARELHO SONORO PARA SINALIZAÇÃO DE EMERGÊNCIA.

ConcedidaUtility Model

Application data

Number

MU6500031

Type

Utility Model

Filing

01/10/1985

Publication

08/19/1986

Progress at the INPI

  1. Filing01/10/85
  2. Publication08/19/86
  3. Examination11/18/86
  4. Allowance04/26/88
  5. Grant12/27/88
  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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. K. (pessoa física)

Inventors

W. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1988

RPI 949

Notificação para pagamento de retribuição

#13.1

08/09/1988

RPI 929

Deferimento

#9.1

04/26/1988

RPI 914

Exigência - art. 36 da LPI

#6.1

12/08/1987

RPI 894

Solicitação de exame técnico

#4.1

11/18/1986

RPI 839

Publicação do pedido de patente

#3.1

08/19/1986

RPI 826

Pedido de patente depositado

#2.1

04/09/1985

RPI 755

Carta-patente expirada

#21.1

06/06/1995

RPI 1279

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