20.4
01/26/1988
RPI 901
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: 01/26/1988. We update with every new RPI gazette, published weekly.
Applicants
N. M. (pessoa física)
Inventors
B. E. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
01/26/1988
RPI 901
#16.1
05/31/1983
RPI 658
03/29/1983
RPI 649
12/21/1982
RPI 635
#21.1
07/27/1993
RPI 1182
From the same holder
Same category
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