Official data from INPI

AUTO AMPLIFICADOR

Em AnáliseInvention Patent

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Application data

Number

PI7604022

Type

Invention Patent

Filing

06/22/1976

Publication

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Progress at the INPI

Filing06/22/76
Publication
Examination
Allowance
Grant08/31/82
Invalidated12/20/83

The patent was invalidated by the INPI in an administrative invalidity proceeding. Protection no longer exists.

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Latest action published by the INPI: 12/20/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TELESTASI LTDA

Inventors

D. N. (pessoa física)

Technical data

IPC Classification

H03F 3/183

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

200

12/20/1983

RPI 687

Pedido de licença voluntária

#17.1

07/05/1983

RPI 663

Concessão da patente

#16.1

08/31/1982

RPI 619

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