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Official data from INPI

Instalação para redução das pontas de tensão de campo para motores de corrente contínua.

Em AnáliseInvention Patent
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Application data

Number

PI7904207

Type

Invention Patent

Filing

07/03/1979

Publication

-
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Progress at the INPI

  1. Filing07/03/79
  2. Publication
  3. Examination
  4. Allowance04/13/82
  5. Grant
  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.

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Latest action published by the INPI: 08/03/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BBC Brown, Soveri & Company Limited.

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

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

04/18/1995

RPI 1272

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