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Official data from INPI

REGULADOR HIDRAULICO DE TRACAO PARA TRATORES

ConcedidaInvention Patent

Application data

Number

PI7705224

Type

Invention Patent

Filing

08/05/1977

Publication

-

Progress at the INPI

  1. Filing08/05/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant08/30/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 08/30/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PISMEL TRATORES LTD

Inventors

A. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1983

RPI 671

110

04/12/1983

RPI 651

120

10/26/1982

RPI 627

Recurso

#12.1

03/02/1982

RPI 593

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

20.7

04/21/1992

RPI 1116

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