18.8
09/30/1986
RPI 832
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: 09/30/1986. We update with every new RPI gazette, published weekly.
Applicants
A. A. (pessoa física)
SP, BR
Inventors
D. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/30/1986
RPI 832
#18.2
06/24/1986
RPI 818
#16.1
09/04/1984
RPI 724
#13.1
08/07/1984
RPI 720
05/02/1984
RPI 706
#12.2
10/25/1983
RPI 679
#9.2
08/02/1983
RPI 667
#4.1
06/22/1982
RPI 609
#3.1
03/09/1982
RPI 594
#21.1
12/07/1993
RPI 1201
From the same holder
Same category
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