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Official data from INPI

SISTEMA DE ELEVADOR

Em AnáliseInvention Patent

Application data

Number

PI7608217

Type

Invention Patent

Filing

12/10/1975

Publication

-

Progress at the INPI

  1. Filing12/10/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/27/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 04/15/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WESTINGHOUSE ELECTRIC CORP

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Inventors

C. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

04/15/1986

RPI 808

Concessão da patente

#16.1

12/27/1983

RPI 688

110

10/11/1983

RPI 677

120

05/31/1983

RPI 658

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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