Solicitação de exame técnico
#4.1
07/26/1988
RPI 927
The letters patent expired on 09/18/2001: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 07/26/1988. We update with every new RPI gazette, published weekly.
Applicants
Durval Borges de Almeida & Cia. Ltda.
SP, BR
Inventors
D. A. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
07/26/1988
RPI 927
#3.2
03/01/1988
RPI 906
#2.1
11/17/1987
RPI 891
#21.1
Patente extinta em 22/04/97 conforme disposto no artigo 24 da Lei 5772/71 (CPI).
09/18/2001
RPI 1602
#16.1
07/30/1991
RPI 1078
#13.1
04/16/1991
RPI 1063
#15.11
04/09/1991
RPI 1062
#9.1
01/02/1991
RPI 1048
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Same category
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