20.4
08/08/1989
RPI 981
The letters patent expired on 04/25/1995: 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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants
Djalma de Oliveira & Filhos S/A
Inventors
V. J. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/08/1989
RPI 981
#16.1
06/26/1984
RPI 714
#13.1
04/10/1984
RPI 703
#9.1
12/13/1983
RPI 686
#4.1
07/27/1982
RPI 614
#21.1
04/25/1995
RPI 1273
From the same holder
Same category
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