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Official data from INPI

VALVULA DE COMANDO PARA SISTEMAS DE DIRECAO SERVO-ASSISTIDOS COM CILINDRO DE TRABALHO NAO COMPENSADO

ConcedidaInvention Patent

Application data

Number

PI7806744

Type

Invention Patent

Filing

10/13/1977

Publication

-

Progress at the INPI

  1. Filing10/13/77
  2. Publication
  3. Examination
  4. Allowance01/05/82
  5. Grant08/31/82
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 08/31/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Z. F. (pessoa física)

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Inventors

S. R. (pessoa física)

W. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

05/04/1982

RPI 602

15.0

02/24/1982

RPI 592

Deferimento

#9.1

01/05/1982

RPI 585

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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