20.4
09/27/1983
RPI 675
The letters patent expired on 05/03/1994: 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: 09/27/1983. We update with every new RPI gazette, published weekly.
Applicants
E. A. (pessoa física)
Inventors
S. E. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/27/1983
RPI 675
#16.1
02/22/1983
RPI 644
#13.1
12/14/1982
RPI 634
#9.1
07/27/1982
RPI 614
#6.1
12/29/1981
RPI 584
#21.1
05/03/1994
RPI 1222
From the same holder
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