20.4
05/29/1984
RPI 710
The letters patent expired on 04/04/1995: 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: 05/29/1984. We update with every new RPI gazette, published weekly.
Applicants
NIPPON ELECTRIC CO
Inventors
F. G. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
05/29/1984
RPI 710
#16.1
05/31/1983
RPI 658
#13.1
02/01/1983
RPI 641
#9.1
09/28/1982
RPI 623
#6.1
04/13/1982
RPI 599
#21.1
04/04/1995
RPI 1270
From the same holder
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