20.4
11/01/1988
RPI 941
The letters patent expired on 07/06/1993: 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: 11/01/1988. We update with every new RPI gazette, published weekly.
Applicants
A. M. (pessoa física)
Inventors
F. A. (pessoa física)
N. P. (pessoa física)
V. N. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/01/1988
RPI 941
06/28/1988
RPI 923
02/17/1988
RPI 904
#18.2
12/15/1987
RPI 895
#22.1
11/26/1985
RPI 788
#16.1
02/22/1983
RPI 644
#13.1
01/11/1983
RPI 638
#9.1
08/24/1982
RPI 618
#6.1
01/19/1982
RPI 587
#21.1
07/06/1993
RPI 1179
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Same category
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