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Official data from INPI

CAIXA DE VENTILACAO E AQUECIMENTO DE AR PARA O INTERIOR DE UM VEICULO DE TRANSPORTE COLETIVO,EM ESPECIAL ONIBUS

ConcedidaUtility Model

Application data

Number

MU6400591

Type

Utility Model

Filing

04/25/1984

Publication

07/24/1984

Progress at the INPI

  1. Filing04/25/84
  2. Publication07/24/84
  3. Examination10/02/84
  4. Allowance03/17/87
  5. Grant08/25/87
  6. Expired10/04/94

The letters patent expired on 10/04/1994: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DAIMLER BENZ BRASIL [BR]

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Inventors

P. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

03/17/1987

RPI 856

Exigência - art. 36 da LPI

#6.1

07/22/1986

RPI 822

Pedido de certificado de adição de invenção

#5.1

02/26/1985

RPI 749

Solicitação de exame técnico

#4.1

10/02/1984

RPI 728

Publicação antecipada

#3.2

07/24/1984

RPI 718

Pedido de patente depositado

#2.1

07/03/1984

RPI 715

Carta-patente expirada

#21.1

10/04/1994

RPI 1244

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