20.7
09/23/1986
RPI 831
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: 09/23/1986. We update with every new RPI gazette, published weekly.
Applicants
A. A. (pessoa física)
SE
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/23/1986
RPI 831
#16.1
11/11/1980
RPI 525
#21.1
11/17/1992
RPI 1146
From the same holder
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