20.7
07/16/1985
RPI 769
The letters patent expired on 07/27/1993: 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: 07/16/1985. We update with every new RPI gazette, published weekly.
Applicants
R. S. (pessoa física)
Inventors
B. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/16/1985
RPI 769
#16.1
08/30/1983
RPI 671
05/24/1983
RPI 657
#15.11
05/24/1983
RPI 657
#12.1
12/22/1981
RPI 583
#21.1
07/27/1993
RPI 1182
From the same holder
Same category
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