20.4
04/19/1988
RPI 913
The letters patent expired on 11/17/1992: 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: 04/19/1988. We update with every new RPI gazette, published weekly.
Applicants
S. C. (pessoa física)
US
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
04/19/1988
RPI 913
#20.1
04/12/1988
RPI 912
#16.1
04/27/1982
RPI 601
#13.1
11/10/1981
RPI 577
#21.1
11/17/1992
RPI 1146
From the same holder
Same category
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