20.7
11/04/1986
RPI 837
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: 11/04/1986. 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).
11/04/1986
RPI 837
#16.1
04/29/1986
RPI 810
#13.1
11/12/1985
RPI 786
#9.1
07/09/1985
RPI 768
#6.1
12/18/1984
RPI 739
#4.1
05/15/1984
RPI 708
#3.1
01/24/1984
RPI 692
#2.1
08/03/1982
RPI 615
#21.1
12/07/1993
RPI 1201
05/14/1991
RPI 1067
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