20.4
08/12/1986
RPI 825
The letters patent expired on 09/21/1993: 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: 08/12/1986. We update with every new RPI gazette, published weekly.
Applicants
N. M. (pessoa física)
SP, BR
Inventors
R. J. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/12/1986
RPI 825
08/05/1986
RPI 824
07/29/1986
RPI 823
#16.1
02/24/1982
RPI 592
#21.1
09/21/1993
RPI 1190
#20.1
10/09/1990
RPI 1036
10/02/1990
RPI 1035
From the same holder
Same category
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