20.4
05/27/1986
RPI 814
The letters patent expired on 10/26/1993: 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: 05/27/1986. We update with every new RPI gazette, published weekly.
Applicants
S. D. (pessoa física)
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
05/27/1986
RPI 814
#20.1
10/23/1984
RPI 731
#21.1
10/26/1993
RPI 1195
From the same holder
Same category
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