Official data from INPI

DISPOSITIVO INJETOR DE MUSICA NA ESPERA,EM COMUNICACOES TELEFONICAS

Em AnáliseInvention Patent

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Application data

Number

PI7901735

Type

Invention Patent

Filing

03/21/1979

Publication

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Progress at the INPI

Filing03/21/79
Publication
Examination
Allowance03/30/82
Grant11/30/82
Terminated01/28/92

The patent was granted on 11/30/1982 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: 11/11/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GTE BRASIL SA IND COM

Inventors

S. V. (pessoa física)

Technical data

IPC Classification

H04M 11/08

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/11/1986

RPI 838

Pedido de licença compulsória

#20.1

05/29/1984

RPI 710

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

07/20/1982

RPI 613

Deferimento

#9.1

03/30/1982

RPI 597

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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DISPOSITIVO DE TESTE PARA LAMPADAS FLUORESCENTES

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