20.4
06/16/1987
RPI 869
The patent was granted and later terminated. Protection ended before the full term and the technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 06/16/1987. We update with every new RPI gazette, published weekly.
Applicants
R. A. (pessoa física)
Inventors
No inventors listed.
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
06/16/1987
RPI 869
#13.1
06/29/1982
RPI 610
#9.1
03/09/1982
RPI 594
07/06/1993
RPI 1179
#21.1
06/29/1993
RPI 1178
From the same holder
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