20.4
08/30/1988
RPI 932
The letters patent expired on 12/07/1993: 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: 08/30/1988. We update with every new RPI gazette, published weekly.
Applicants
METALURGICA JACKWAL LTDA [BR]
Inventors
O. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/30/1988
RPI 932
08/23/1988
RPI 931
08/09/1988
RPI 929
#18.2
05/24/1988
RPI 918
04/19/1988
RPI 913
#16.1
06/30/1987
RPI 871
#13.1
03/04/1987
RPI 854
#9.1
09/30/1986
RPI 832
#6.1
03/04/1986
RPI 802
#6.1
05/07/1985
RPI 759
#4.1
07/17/1984
RPI 717
#3.1
04/03/1984
RPI 702
#2.1
10/19/1982
RPI 626
#21.1
12/07/1993
RPI 1201
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Same category
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