20.4
12/13/1988
RPI 947
The letters patent expired on 07/06/1993: 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: 12/13/1988. We update with every new RPI gazette, published weekly.
Applicants
C. A. (pessoa física)
Inventors
C. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
12/13/1988
RPI 947
12/06/1988
RPI 946
#16.1
08/31/1982
RPI 619
#13.1
12/22/1981
RPI 583
#21.1
07/06/1993
RPI 1179
From the same holder
Same category
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