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Official data from INPI

ENROLAMENTO DE DUAS OU MAIS CAMADAS PARA MAQUINAS ELETRICA

ConcedidaInvention Patent

Application data

Number

PI7904097

Type

Invention Patent

Filing

06/29/1978

Publication

-

Progress at the INPI

  1. Filing06/29/78
  2. Publication
  3. Examination
  4. Allowance04/13/82
  5. Grant11/30/82
  6. Expired04/04/95

The letters patent expired on 04/04/1995: 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: 11/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BBC BROWN BOVERI & CIE

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Inventors

R. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

08/03/1982

RPI 615

Deferimento

#9.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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