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Official data from INPI

DISPOSITIVO SELETOR DE COORDENADOR ELETROMAGNETICO DE MULTICONTATO VEDADO

Em AnáliseInvention Patent
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Application data

Number

PI7607046

Type

Invention Patent

Filing

11/12/1975

Publication

-
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Progress at the INPI

  1. Filing11/12/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/24/82
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 09/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON TELEGRAPH & TELEPHONE

Inventors

I. G. (pessoa física)

N. S. (pessoa física)

S. H. (pessoa física)

W. K. (pessoa física)

Technical data

IPC Classification

H01H 67/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

09/15/1987

RPI 882

20.10

09/15/1987

RPI 882

Pedido de licença compulsória

#20.1

09/02/1986

RPI 828

20.4

12/26/1984

RPI 740

20.6

07/10/1984

RPI 716

Concessão da patente

#16.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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