20.4
11/11/1986
RPI 838
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: 11/11/1986. We update with every new RPI gazette, published weekly.
Applicants
S. D. (pessoa física)
Inventors
E. B. (pessoa física)
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
11/11/1986
RPI 838
#16.1
12/26/1984
RPI 740
#13.1
10/02/1984
RPI 728
08/07/1984
RPI 720
#9.1
06/12/1984
RPI 712
05/02/1984
RPI 706
#7.1
09/27/1983
RPI 675
#21.1
12/07/1993
RPI 1201
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