18.8
08/25/1987
RPI 879
The letters patent expired on 11/17/1992: 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: 08/25/1987. We update with every new RPI gazette, published weekly.
Applicants
N. F. (pessoa física)
SP, BR
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/25/1987
RPI 879
#18.2
06/02/1987
RPI 867
11/26/1985
RPI 788
#18.2
07/30/1985
RPI 771
#16.1
04/29/1980
RPI 497
#21.1
11/17/1992
RPI 1146
Same category
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