20.4
12/13/1988
RPI 947
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: 12/13/1988. We update with every new RPI gazette, published weekly.
Applicants
C. A. (pessoa física)
Inventors
F. A. (pessoa física)
G. H. (pessoa física)
R. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
12/13/1988
RPI 947
12/06/1988
RPI 946
#22.1
02/26/1985
RPI 749
09/27/1983
RPI 675
#16.1
05/31/1983
RPI 658
#13.1
12/14/1982
RPI 634
#9.1
07/27/1982
RPI 614
#4.1
11/24/1981
RPI 579
#21.1
12/07/1993
RPI 1201
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Same category
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