20.4
11/14/1989
RPI 995
The letters patent expired on 06/21/1994: 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: 11/14/1989. We update with every new RPI gazette, published weekly.
Applicants
R. R. (pessoa física)
Inventors
R. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/14/1989
RPI 995
12/23/1986
RPI 844
#17.1
05/27/1986
RPI 814
#20.1
08/27/1985
RPI 775
#16.1
03/26/1985
RPI 753
#13.1
12/11/1984
RPI 738
#9.1
08/21/1984
RPI 722
#6.1
03/13/1984
RPI 699
#6.1
11/01/1983
RPI 680
#21.1
06/21/1994
RPI 1229
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Same category
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