Official data from INPI

RECEPTOR DE DISCAGEM PARA TELEFONIA E APLICACOES SEMELHANTES

Em AnáliseInvention Patent

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Application data

Number

PI7903957

Type

Invention Patent

Filing

06/23/1978

Publication

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Progress at the INPI

Filing06/23/78
Publication
Examination
Allowance12/21/82
Grant08/30/83
Expired04/04/95

The letters patent expired on 04/04/1995: 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

INT ELECTRIC CORP

Inventors

F. A. (pessoa física)

S. C. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

H04Q 3/52

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

11/24/1987

RPI 892

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

05/24/1983

RPI 657

Deferimento

#9.1

12/21/1982

RPI 635

8.1

10/13/1982

RPI 625

Exigência - art. 36 da LPI

#6.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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