20.4
05/07/1985
RPI 759
The letters patent expired on 09/21/1993: 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: 05/07/1985. We update with every new RPI gazette, published weekly.
Applicants
P. P. (pessoa física)
Inventors
P. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
05/07/1985
RPI 759
#20.1
02/07/1984
RPI 694
#20.1
01/17/1984
RPI 691
#20.1
01/10/1984
RPI 690
09/06/1983
RPI 672
02/16/1983
RPI 643
#17.1
07/20/1982
RPI 613
#16.1
12/29/1981
RPI 584
#21.1
09/21/1993
RPI 1190
Same category
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