20.4
11/21/1989
RPI 996
The letters patent expired on 12/07/1993: 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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
B. N. (pessoa física)
Inventors
B. N. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/21/1989
RPI 996
#20.1
08/27/1985
RPI 775
#16.1
02/26/1985
RPI 749
#13.1
10/02/1984
RPI 728
#9.1
06/12/1984
RPI 712
#6.1
11/09/1982
RPI 629
#21.1
12/07/1993
RPI 1201
From the same holder
Same category
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