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Official data from INPI

ESTRUTURA DE VEDACAO DE MANCAL

Em AnáliseInvention Patent

Application data

Number

PI7605632

Type

Invention Patent

Filing

12/23/1975

Publication

-

Progress at the INPI

  1. Filing12/23/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/25/82
  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: 03/31/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TEXTRON INC

See this company's full portfolio

Inventors

D. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

03/31/1987

RPI 858

201

11/29/1983

RPI 684

Pedido de licença voluntária

#17.1

07/19/1983

RPI 665

Concessão da patente

#16.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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