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Official data from INPI

GUARNICAO DE RETENCAO COM ANEL DE EXPANSAO COMPENSADOR

Em AnáliseInvention Patent

Application data

Number

PI7802998

Type

Invention Patent

Filing

05/11/1977

Publication

-

Progress at the INPI

  1. Filing05/11/77
  2. Publication
  3. Examination
  4. Allowance09/28/82
  5. Grant05/31/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 03/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ITALTRACTOR

Inventors

R. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

03/04/1986

RPI 802

20.4

02/18/1986

RPI 800

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

02/01/1983

RPI 641

Deferimento

#9.1

09/28/1982

RPI 623

Exigência - art. 36 da LPI

#6.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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