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Official data from INPI

APARELHO PARA EXTRACAO DE ROLHA,SACA-ROLHAS HELICOIDAL,E PROCESSO PARA FORMAR UM SACA-ROLHAS

ConcedidaInvention Patent

Application data

Number

PI7904519

Type

Invention Patent

Filing

03/05/1979

Publication

-

Progress at the INPI

  1. Filing03/05/79
  2. Publication
  3. Examination04/27/82
  4. Allowance01/31/84
  5. Grant08/28/84
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 08/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. H. (pessoa física)

Inventors

A. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

05/15/1984

RPI 708

Deferimento

#9.1

01/31/1984

RPI 693

Exigência - art. 36 da LPI

#6.1

06/07/1983

RPI 659

Solicitação de exame técnico

#4.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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