20.4
08/22/1989
RPI 983
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: 08/22/1989. We update with every new RPI gazette, published weekly.
Applicants
MARIANO RUY RODRIGUES [BR]
Inventors
M. [. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/22/1989
RPI 983
#20.1
11/04/1986
RPI 837
#16.1
03/25/1986
RPI 805
#13.1
11/12/1985
RPI 786
#9.1
07/09/1985
RPI 768
#15.11
04/23/1985
RPI 757
#6.1
02/12/1985
RPI 747
#4.1
01/17/1984
RPI 691
#3.1
05/03/1983
RPI 654
#2.1
11/03/1981
RPI 576
#21.1
12/07/1993
RPI 1201
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Same category
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