20.4
08/16/1983
RPI 669
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: 08/16/1983. We update with every new RPI gazette, published weekly.
Applicants
E. A. (pessoa física)
Inventors
K. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/16/1983
RPI 669
#16.1
11/30/1982
RPI 632
#13.1
09/21/1982
RPI 622
#9.1
06/01/1982
RPI 606
#6.1
11/24/1981
RPI 579
#21.1
07/27/1993
RPI 1182
From the same holder
Same category
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