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Official data from INPI

APERFEICOAMENTO EM SISTEMA DE ELEVADORES PARA EDIFICIO COM UMA PLURALIDADE DE ANDARES

ConcedidaInvention Patent

Application data

Number

PI7704306

Type

Invention Patent

Filing

07/09/1976

Publication

-

Progress at the INPI

  1. Filing07/09/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant06/29/82
  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: 06/29/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE ELECTRIC CORP

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Inventors

E. K. (pessoa física)

K. A. (pessoa física)

M. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/29/1982

RPI 610

Notificação para pagamento de retribuição

#13.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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