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Official data from INPI

PROCESSO E APARELHO APERFEIÇOADO PARA POSICIONAR E TESTAR RODAS PARA FERROVIAS

Em AnáliseInvention Patent

Application data

Number

PI8606458

Type

Invention Patent

Filing

12/29/1986

Publication

10/20/1987

Progress at the INPI

  1. Filing12/29/86
  2. Publication10/20/87
  3. Examination01/12/88
  4. Allowance06/25/91
  5. Grant04/28/92
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 01/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amsted Industries Incorporated

US

See this company's full portfolio

Inventors

C. S. (pessoa física)

US

L. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

817.921 · 01/13/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

01/12/1988

RPI 899

Publicação do pedido de patente

#3.1

10/20/1987

RPI 887

Pedido de patente depositado

#2.1

04/28/1987

RPI 862

Carta-patente expirada

#21.1

Patente extinta em 29/12/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/28/1992

RPI 1117

15.18

12/17/1991

RPI 1098

Retificação

#15.3

11/05/1991

RPI 1092

Deferimento

#9.1

06/25/1991

RPI 1073

Exigência - art. 36 da LPI

#6.1

01/15/1991

RPI 1050

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