20.4
09/23/1986
RPI 831
The letters patent expired on 09/21/1993: 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: 09/23/1986. We update with every new RPI gazette, published weekly.
Applicants
B. C. (pessoa física)
CARDOSO E
Inventors
B. C. (pessoa física)
C. E. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/23/1986
RPI 831
#20.1
10/23/1984
RPI 731
#16.1
02/22/1983
RPI 644
11/03/1982
RPI 628
#12.1
03/16/1982
RPI 595
#9.1
11/17/1981
RPI 578
#21.1
09/21/1993
RPI 1190
From the same holder
Same category
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