20.7
09/23/1986
RPI 831
The letters patent expired on 11/30/1993: 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: 09/23/1986. We update with every new RPI gazette, published weekly.
Applicants
S. B. (pessoa física)
Inventors
B. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/23/1986
RPI 831
#20.1
09/16/1986
RPI 830
09/09/1986
RPI 829
09/02/1986
RPI 828
01/02/1985
RPI 741
12/26/1984
RPI 740
#16.1
08/31/1982
RPI 619
#13.1
04/13/1982
RPI 599
#9.1
12/01/1981
RPI 580
#21.1
11/30/1993
RPI 1200
#20.1
08/11/1992
RPI 1132
08/04/1992
RPI 1131
08/04/1992
RPI 1131
11/05/1991
RPI 1092
06/12/1990
RPI 1022
#20.1
06/05/1990
RPI 1021
05/29/1990
RPI 1020
05/29/1990
RPI 1020
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Same category
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