20.4
09/27/1988
RPI 936
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: 09/27/1988. We update with every new RPI gazette, published weekly.
Applicants
C. A. (pessoa física)
Inventors
C. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/27/1988
RPI 936
09/27/1988
RPI 936
10/08/1985
RPI 781
#16.1
06/29/1982
RPI 610
10/27/1981
RPI 575
#21.1
09/21/1993
RPI 1190
Same category
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