18.3
04/04/1989
RPI 963
The letters patent expired on 08/03/1993: 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: 04/04/1989. We update with every new RPI gazette, published weekly.
Applicants
M. I. (pessoa física)
Inventors
K. N. (pessoa física)
O. K. (pessoa física)
T. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
04/04/1989
RPI 963
06/16/1987
RPI 869
09/30/1986
RPI 832
#16.1
07/27/1982
RPI 614
#13.1
12/29/1981
RPI 584
#21.1
08/03/1993
RPI 1183
From the same holder
Same category
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