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Official data from INPI

FREIO A TAMBOR

ConcedidaInvention Patent
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Application data

Number

PI7800409

Type

Invention Patent

Filing

01/25/1977

Publication

-
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Progress at the INPI

  1. Filing01/25/77
  2. Publication
  3. Examination
  4. Allowance07/13/82
  5. Grant05/31/83
  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.

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

Applicants and inventors

Applicants

DBA SA

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Inventors

C. P. (pessoa física)

Technical data

IPC Classification

F16D 51/20

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

Deferimento

#9.1

07/13/1982

RPI 612

Exigência - art. 36 da LPI

#6.1

02/16/1982

RPI 591

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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