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Official data from INPI

CABECOTE PARA ESFERAS DE ALTA VELOCIDADE

ConcedidaInvention Patent

Application data

Number

PI7705734

Type

Invention Patent

Filing

08/29/1977

Publication

04/27/1982

Progress at the INPI

  1. Filing08/29/77
  2. Publication04/27/82
  3. Examination
  4. Allowance12/22/81
  5. Grant08/31/82
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 08/31/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NAT MACHINERY CO

Inventors

H. A. (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

Publicação do pedido de patente

#3.1

04/27/1982

RPI 601

15.0

03/23/1982

RPI 596

Deferimento

#9.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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