20.7
06/19/1984
RPI 713
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: 06/19/1984. We update with every new RPI gazette, published weekly.
Applicants
ALUMINIO EMPRESS S/A . INDÚSTRIA METALURGICA.
Inventors
C. L. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
06/19/1984
RPI 713
#16.1
04/26/1983
RPI 653
#13.1
01/11/1983
RPI 638
#9.1
08/24/1982
RPI 618
#6.1
04/13/1982
RPI 599
#21.1
12/07/1993
RPI 1201
Same category
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