20.7
09/02/1986
RPI 828
The letters patent expired on 08/19/2008: 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: 09/02/1986. We update with every new RPI gazette, published weekly.
Applicants
S. D. (pessoa física)
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/02/1986
RPI 828
#16.1
06/28/1983
RPI 662
#13.1
03/22/1983
RPI 648
#9.1
11/16/1982
RPI 630
10/06/1981
RPI 572
#21.1
Patente extinta em 15/06/87
08/19/2008
RPI 1963
From the same holder
Same category
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