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Official data from INPI

DISPOSITIVO SINALIZADOR PARA MESAS TELEFÔNICAS

Em ExigênciaInvention Patent

Application data

Number

PI8501771

Type

Invention Patent

Filing

04/15/1985

Publication

07/16/1985

Progress at the INPI

  1. Filing04/15/85
  2. Publication07/16/85
  3. Examination10/15/85
  4. Allowance08/28/90
  5. Grant04/30/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Telecomunicações de São Paulo S/A - TELESP

SP, BR

See this company's full portfolio

Inventors

J. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/31/1989

RPI 993

Solicitação de exame técnico

#4.1

10/15/1985

RPI 782

Publicação antecipada

#3.2

07/16/1985

RPI 769

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Carta-patente expirada

#21.1

Patente extinta em 15/04/2000

07/15/2008

RPI 1958

15.17

04/02/1996

RPI 1322

15.10

03/17/1992

RPI 1111

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

12/11/1990

RPI 1045

Deferimento

#9.1

08/28/1990

RPI 1030

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