Official data from INPI

INSTRUMENTO ELETRICO MUSICAL

Em AnáliseInvention Patent

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Application data

Number

PI7604128

Type

Invention Patent

Filing

12/10/1975

Publication

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Progress at the INPI

Filing12/10/75
Publication
Examination
Allowance
Grant
Expired08/03/93

The letters patent expired on 08/03/1993: 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON ELECTRIC CO

Inventors

A. F. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

05/29/1984

RPI 710

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

From the same holder

CIRCUITO EM LACO COM BLOQUEIO DE FASE DISPOSITIVO MATRIZ COMUTADOR ELETROMAGNETICO SISTEMA DE TRANSMISSAO DE SINAL PILOTO CONTATO PARA COMUTADOR ELETRICO CONJUNTO DE SUBSTRATO PARA UM CIRCUITO ELETRONICO POSSUINDO FLACOES COM MULTIPLAS CAMADAS,CADA UMA COMPREENDENDO FILME METALICO DE FIACAO PAINEL DE LACAO IMPRESSO E METODO DE SUA MANUFATURA DISPOSITIVO COMUTADOR DE SINAL

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