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Official data from INPI

DISPOSITIVO DE COMANDO DE DOIS OBTURADORES MONTADOS EM SERIE SOBRE UM MESMO CONDUTO

ConcedidaInvention Patent

Application data

Number

PI8001443

Type

Invention Patent

Filing

03/13/1979

Publication

-

Progress at the INPI

  1. Filing03/13/79
  2. Publication
  3. Examination01/11/83
  4. Allowance11/29/83
  5. Grant05/29/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NEYRPIC

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Inventors

C. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/20/1984

RPI 700

Deferimento

#9.1

11/29/1983

RPI 684

Solicitação de exame técnico

#4.1

01/11/1983

RPI 638

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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