20.4
06/28/1988
RPI 923
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: 06/28/1988. We update with every new RPI gazette, published weekly.
Applicants
A. Q. (pessoa física)
Inventors
M. E. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
06/28/1988
RPI 923
06/28/1988
RPI 923
#22.1
03/04/1986
RPI 802
#22.1
04/02/1985
RPI 754
#16.1
10/25/1983
RPI 679
#13.1
08/02/1983
RPI 667
#9.1
03/22/1983
RPI 648
10/13/1982
RPI 625
#6.1
04/06/1982
RPI 598
#21.1
05/03/1994
RPI 1222
Same category
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