20.11
03/17/1987
RPI 856
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: 03/17/1987. We update with every new RPI gazette, published weekly.
Applicants
O. E. (pessoa física)
Inventors
O. E. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
03/17/1987
RPI 856
#20.1
12/30/1986
RPI 845
#16.1
04/29/1986
RPI 810
#13.1
12/10/1985
RPI 790
#9.1
08/06/1985
RPI 772
#4.1
11/20/1984
RPI 735
#3.1
02/16/1983
RPI 643
#21.1
12/07/1993
RPI 1201
Same category
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