Solicitação de exame técnico
#4.1
11/17/1987
RPI 891
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: 11/17/1987. We update with every new RPI gazette, published weekly.
Applicants
Perlima Metais Perfurados Ltda., firma brasileira, industrial e comercial
SP, BR
Inventors
P. W. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
11/17/1987
RPI 891
#3.2
06/23/1987
RPI 870
#2.1
04/28/1987
RPI 862
#21.1
Patente extinta em 22/10/1996
07/01/2008
RPI 1956
#16.1
11/24/1992
RPI 1147
#13.1
06/30/1992
RPI 1126
#9.1
02/04/1992
RPI 1105
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