20.4
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
PENTEC PENEIRAS IND LTDA [BR]
Inventors
B. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/04/1986
RPI 837
#16.1
02/04/1986
RPI 798
#13.1
10/22/1985
RPI 783
#9.1
07/02/1985
RPI 767
#4.1
05/29/1984
RPI 710
#3.2
02/21/1984
RPI 696
#2.1
07/05/1983
RPI 663
#21.1
12/07/1993
RPI 1201
Same category
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