20.7
11/10/1987
RPI 890
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: 11/10/1987. We update with every new RPI gazette, published weekly.
Applicants
P. R. (pessoa física)
Inventors
P. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/10/1987
RPI 890
#15.11
03/07/1984
RPI 698
#16.1
04/26/1983
RPI 653
#13.1
01/11/1983
RPI 638
#9.1
09/08/1982
RPI 620
#6.1
01/26/1982
RPI 588
#21.1
05/03/1994
RPI 1222
From the same holder
Same category
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