18.3
11/28/1989
RPI 997
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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
C. R. (pessoa física)
R. Z. (pessoa física)
SP, BR
Inventors
R. C. (pessoa física)
Z. D. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/28/1989
RPI 997
08/08/1989
RPI 981
#16.1
07/31/1984
RPI 719
#13.1
04/17/1984
RPI 704
#9.1
12/20/1983
RPI 687
#4.1
11/09/1982
RPI 629
#3.1
08/31/1982
RPI 619
#21.1
12/07/1993
RPI 1201
#20.2
08/28/1990
RPI 1030
06/05/1990
RPI 1021
04/10/1990
RPI 1013
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Same category
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