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Official data from INPI

DISPOSICAO CONSTRUTIVA EM DIFUSOR DE AR

Arquivada/ExtintaUtility Model
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Application data

Number

MU5600334

Type

Utility Model

Filing

03/29/1976

Publication

-
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Progress at the INPI

  1. Filing03/29/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired07/15/86

The letters patent expired on 07/15/1986: 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: 07/15/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. S. (pessoa física)

Inventors

O. A. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

07/15/1986

RPI 821

20.4

08/07/1984

RPI 720

20.7

10/18/1983

RPI 678

20.4

09/20/1983

RPI 674

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