Official data from INPI

MELHORAMENTOS EM OU RELATIVOS A SISTEMAS TELEFONICOS

Em AnáliseInvention Patent

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Application data

Number

PI7800584

Type

Invention Patent

Filing

02/01/1977

Publication

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Progress at the INPI

Filing02/01/77
Publication
Examination
Allowance
Grant
Terminated06/14/88

The patent was granted and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/14/1988. 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).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

Arquivamento - Art. 36 §1° da LPI

#11.2

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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