Official data from INPI

METODO E APARELHO PARA MEDIR SOBRETENSOES

Em AnáliseInvention Patent

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Application data

Number

PI7702702

Type

Invention Patent

Filing

04/28/1977

Publication

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Progress at the INPI

Filing04/28/77
Publication
Examination
Allowance
Grant
Expired07/27/93

The letters patent expired on 07/27/1993: 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: 05/27/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STANDARD ELECTRICA SA

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

05/27/1986

RPI 814

Notificação para pagamento de retribuição

#13.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

From the same holder

ENVIADOR DE TESTE TEMPORIZADOR MULTICALIBRE TESTADOR AUTOMATICO DE PRE-SELECOES NOVO METODO PARA TESTAR CONDUTORES ISOLADOS DENTRO DE CABOS

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