(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

GRAMPO DE LIGACAO DE TRILHO DE ESTRADA DE FERRO

ConcedidaInvention Patent

Application data

Number

PI7607400

Type

Invention Patent

Filing

11/07/1975

Publication

-

Progress at the INPI

  1. Filing11/07/75
  2. Publication
  3. Examination
  4. Allowance01/25/83
  5. Grant05/31/83
  6. 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.

Talk to a specialist

Latest action published by the INPI: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PANDROL LTD

Inventors

M. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

100

01/25/1983

RPI 640

120

09/21/1982

RPI 622

Petição de recurso

#12.2

03/02/1982

RPI 593

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.