20.4
02/14/1989
RPI 956
The letters patent expired on 08/03/1993: 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: 02/14/1989. 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).
02/14/1989
RPI 956
10/02/1984
RPI 728
#22.1
06/26/1984
RPI 714
#16.1
12/29/1981
RPI 584
#21.1
08/03/1993
RPI 1183
From the same holder
Same category
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