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Official data from INPI

GRAMPO DE SUSPENSAO PARA CONDUTOR AEREO DE TRACAO ELETRICA

Em AnáliseInvention Patent
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Application data

Number

PI7808450

Type

Invention Patent

Filing

02/13/1978

Publication

-
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Progress at the INPI

  1. Filing02/13/78
  2. Publication
  3. Examination
  4. Allowance07/12/83
  5. Grant08/30/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. W. (pessoa física)

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Inventors

F. M. (pessoa física)

Technical data

IPC Classification

F16L 3/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

10/17/1989

RPI 991

20.7

10/16/1984

RPI 730

20.4

10/02/1984

RPI 728

20.4

09/25/1984

RPI 727

Concessão da patente

#16.1

08/30/1983

RPI 671

Deferimento

#9.1

07/12/1983

RPI 664

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

Deferimento

#9.1

12/07/1982

RPI 633

8.1

08/24/1982

RPI 618

15.0

05/11/1982

RPI 603

Exigência - art. 36 da LPI

#6.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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