20.4
08/22/1989
RPI 983
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: 08/22/1989. We update with every new RPI gazette, published weekly.
Applicants
SOBRAL IND COM SA
Inventors
S. J. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/22/1989
RPI 983
#16.1
08/25/1987
RPI 879
#13.1
03/31/1987
RPI 858
#9.1
10/29/1986
RPI 836
03/04/1986
RPI 802
#6.1
05/07/1985
RPI 759
#5.1
05/24/1983
RPI 657
#4.1
12/14/1982
RPI 634
#3.2
05/18/1982
RPI 604
#21.1
12/07/1993
RPI 1201
From the same holder
Same category
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