20.4
11/21/1989
RPI 996
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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
J. G. (pessoa física)
Inventors
G. C. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/21/1989
RPI 996
#20.1
05/05/1987
RPI 863
#16.1
10/29/1986
RPI 836
#13.1
06/24/1986
RPI 818
#9.1
02/12/1986
RPI 799
#6.1
07/23/1985
RPI 770
#4.1
11/29/1983
RPI 684
#3.2
09/13/1983
RPI 673
#2.1
05/17/1983
RPI 656
#21.1
12/07/1993
RPI 1201
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Same category
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