20.4
07/05/1988
RPI 924
The letters patent expired on 07/26/1994: 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: 07/05/1988. We update with every new RPI gazette, published weekly.
Applicants
N. E. (pessoa física)
Inventors
L. L. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/05/1988
RPI 924
06/28/1988
RPI 923
05/27/1986
RPI 814
#16.1
04/30/1985
RPI 758
#13.1
12/26/1984
RPI 740
#9.1
08/28/1984
RPI 723
#6.1
03/07/1984
RPI 698
#4.1
08/24/1982
RPI 618
#3.1
06/29/1982
RPI 610
#21.1
07/26/1994
RPI 1234
Same category
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