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Official data from INPI

TRILHO FERROVIARIO E CONJUNTO DE FIXACAO

Em AnáliseInvention Patent

Application data

Number

PI7605651

Type

Invention Patent

Filing

10/13/1975

Publication

-

Progress at the INPI

  1. Filing10/13/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant03/30/82
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 10/11/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PANDROL LTD

Inventors

B. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

201

10/11/1983

RPI 677

Pedido de licença voluntária

#17.1

04/19/1983

RPI 652

Pedido de licença voluntária

#17.1

05/11/1982

RPI 603

Concessão da patente

#16.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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