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Official data from INPI

APARELHO DE CONTROLE PARA TUBOS DE RAIOS CATODICOS

ConcedidaInvention Patent

Application data

Number

PI7708542

Type

Invention Patent

Filing

12/22/1976

Publication

-

Progress at the INPI

  1. Filing12/22/76
  2. Publication
  3. Examination
  4. Allowance04/12/83
  5. Grant09/27/83
  6. Expired07/20/93

The letters patent expired on 07/20/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

H. M. (pessoa física)

H. M. (pessoa física)

S. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

08/30/1983

RPI 671

Deferimento

#9.1

04/12/1983

RPI 651

Exigência - art. 36 da LPI

#6.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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