Official data from INPI

DISPOSITIVO DE CONTROLE DE VOLUME PARA TELEFONES DOTADOS DE GERADORES DE SINAL DE CHAMADA

IndeferidaInvention Patent

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Application data

Number

PI7902334

Type

Invention Patent

Filing

04/19/1978

Publication

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Progress at the INPI

Under appeal

Filing04/19/78
Publication
Examination
Refused03/15/83
Grant
In force

The application was refused by the INPI on 03/15/1983. The invention was never patented.

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Latest action published by the INPI: 03/15/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

INT STANDARD ELECTRIC CORP

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

03/15/1983

RPI 647

Conhecimento de parecer técnico

#7.1

05/18/1982

RPI 604

From the same holder

METODOS E TECNICAS PARA APLICACAO DE SUBSTANCIAS FOSFORECENTES PARTICULARMENTE ADAPTADOS PARA TELAS FORFORESCENTES GRAVADS CONVERSOR DIGITAL DE DOIS PARA QUATRO FIOS PARA SINAIS TOTALMENTE DUPLEX IMPEDANCIA DE TERMINO DE LINHA DE EQUILIBRIO AUTOMATICO DIGITALMENTE SINTETIZADA APARELHO COMPACTO TELEFONICO EMPREGANDO COMUTADORES DE SUPERVISAO ACIONADOS ESTRUTURA DE REGISTRO DE SILICONE MOS LSI COMUTADOR SEMICONDUTOR DE ALTA VOLTAGEM EQUIPAMENTO PARA MEDDA DE NIVEL E RUIDO EM CANAIS PCM ACOPLADOR DICROICO DE FIBRA APERFEICOADA

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