20.7
09/02/1986
RPI 828
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: 09/02/1986. We update with every new RPI gazette, published weekly.
Applicants
FNV FAB NAC VAGOES SA
Inventors
A. (pessoa física)
P. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/02/1986
RPI 828
#16.1
01/25/1983
RPI 640
#13.1
09/08/1982
RPI 620
#9.1
05/04/1982
RPI 602
#21.1
12/07/1993
RPI 1201
From the same holder
Same category
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