20.4
08/08/1989
RPI 981
The letters patent expired on 05/16/1995: 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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants
M. I. (pessoa física)
Inventors
M. T. (pessoa física)
R. E. (pessoa física)
T. N. (pessoa física)
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
08/08/1989
RPI 981
#16.1
08/28/1984
RPI 723
#13.1
06/12/1984
RPI 712
#9.1
02/21/1984
RPI 696
#6.1
08/23/1983
RPI 670
#4.1
10/13/1982
RPI 625
#21.1
05/16/1995
RPI 1276
From the same holder
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