22.4
11/24/1987
RPI 892
The letters patent expired on 11/24/1992: 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: 11/24/1987. We update with every new RPI gazette, published weekly.
Applicants
D. C. (pessoa física)
US
Inventors
A. S. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
11/24/1987
RPI 892
#16.1
04/14/1981
RPI 547
#9.1
09/16/1980
RPI 517
#21.1
11/24/1992
RPI 1147
From the same holder
Same category
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