Official data from INPI

BLOQUEADOR EM CHAMADAS DDD E DDI

IndeferidaInvention Patent

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Application data

Number

PI8404783

Type

Invention Patent

Filing

09/24/1984

Publication

12/26/1984

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Progress at the INPI

Under appeal

Filing09/24/84
Publication12/26/84
Examination03/26/85
Refused08/22/89
Grant
In force

The application was refused by the INPI on 08/22/1989. The invention was never patented.

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Latest action published by the INPI: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SAO PAULO TELECOM TELESP SA [BR]

Inventors

N. J. (pessoa física)

Technical data

IPC Classification

H04M 1/66

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

08/22/1989

RPI 983

Solicitação de exame técnico

#4.1

03/26/1985

RPI 753

Publicação antecipada

#3.2

12/26/1984

RPI 740

Pedido de patente depositado

#2.1

12/04/1984

RPI 737

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