20.7
09/30/1986
RPI 832
The letters patent expired on 05/03/1994: 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
H. B. (pessoa física)
Inventors
B. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/30/1986
RPI 832
09/23/1986
RPI 831
10/23/1984
RPI 731
#16.1
12/27/1983
RPI 688
#13.1
09/27/1983
RPI 675
#9.1
05/31/1983
RPI 658
#4.1
09/08/1982
RPI 620
#21.1
05/03/1994
RPI 1222
05/29/1990
RPI 1020
Same category
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