Solicitação de exame técnico
#4.1
12/15/1987
RPI 895
The letters patent expired on 07/01/2008: 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: 12/15/1987. We update with every new RPI gazette, published weekly.
Applicants
Tufão - Ventiladores e Exaustores Ltda
ES, BR
Inventors
J. P. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
12/15/1987
RPI 895
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09/08/1987
RPI 881
#3.2
07/21/1987
RPI 874
#2.1
05/05/1987
RPI 863
#21.1
Patente extinta em 18/11/1996
07/01/2008
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05/26/1992
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12/17/1991
RPI 1098
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RPI 1081
03/26/1991
RPI 1060
03/26/1991
RPI 1060
03/19/1991
RPI 1059
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