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Official data from INPI

PROCESSO E SISTEMA COMUTADOR PARA DETECTAR UM NIVEL DE UM PRIMEIRO FLUIDO

Em AnáliseInvention Patent
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Application data

Number

PI7907007

Type

Invention Patent

Filing

10/30/1978

Publication

-
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Progress at the INPI

  1. Filing10/30/78
  2. Publication
  3. Examination
  4. Allowance08/24/82
  5. Grant03/29/83
  6. Terminated05/17/88

The patent was granted on 03/29/1983 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

INDIAN HEAD INC

Inventors

W. N. (pessoa física)

Technical data

IPC Classification

H01H 35/24

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

20.4

09/02/1986

RPI 828

20.4

01/22/1985

RPI 744

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

Exigência - art. 36 da LPI

#6.1

03/09/1982

RPI 594

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