20.4
08/22/1989
RPI 983
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: 08/22/1989. We update with every new RPI gazette, published weekly.
Applicants
M. H. (pessoa física)
Inventors
M. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/22/1989
RPI 983
#16.1
07/30/1985
RPI 771
#13.1
04/23/1985
RPI 757
#9.1
01/02/1985
RPI 741
07/10/1984
RPI 716
#6.1
01/10/1984
RPI 690
#4.1
07/19/1983
RPI 665
#3.1
03/02/1982
RPI 593
#21.1
12/07/1993
RPI 1201
Same category
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