22.0
06/29/1982
RPI 610
The letters patent expired on 11/24/1992: 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: 06/29/1982. We update with every new RPI gazette, published weekly.
Applicants
Serrana S/A. de Mineração
SP, BR
Inventors
No inventors listed.
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
06/29/1982
RPI 610
#21.1
11/24/1992
RPI 1147
From the same holder
Same category
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