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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7406477

Type

Invention Patent

Filing

08/07/1974

Publication

-

Progress at the INPI

  1. Filing08/07/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant09/01/81
  6. Expired11/17/92

The letters patent expired on 11/17/1992: 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: 02/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Devilbiss Company

US

See this company's full portfolio

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

02/14/1989

RPI 956

Concessão da patente

#16.1

09/01/1981

RPI 567

Carta-patente expirada

#21.1

11/17/1992

RPI 1146

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