20.7
10/06/1987
RPI 885
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: 10/06/1987. We update with every new RPI gazette, published weekly.
Applicants
L. A. (pessoa física)
Inventors
No inventors listed.
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
10/06/1987
RPI 885
#20.1
12/30/1986
RPI 845
#13.1
09/14/1982
RPI 621
06/22/1982
RPI 609
#12.1
12/22/1981
RPI 583
#21.1
09/21/1993
RPI 1190
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Same category
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