20.4
08/21/1984
RPI 722
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: 08/21/1984. 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).
08/21/1984
RPI 722
08/14/1984
RPI 721
08/07/1984
RPI 720
#16.1
03/30/1982
RPI 597
10/20/1981
RPI 574
#21.1
10/26/1993
RPI 1195
From the same holder
Same category
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