20.4
11/10/1987
RPI 890
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: 11/10/1987. We update with every new RPI gazette, published weekly.
Applicants
O. J. (pessoa física)
Inventors
O. J. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/10/1987
RPI 890
#20.1
01/22/1985
RPI 744
#16.1
04/24/1984
RPI 705
#13.1
01/24/1984
RPI 692
#9.1
10/11/1983
RPI 677
#4.1
01/25/1983
RPI 640
#3.1
07/27/1982
RPI 614
#21.1
12/07/1993
RPI 1201
From the same holder
Same category
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