Concessão da patente
#16.1
05/12/1981
RPI 551
The letters patent expired on 11/24/1992: 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: 05/12/1981. We update with every new RPI gazette, published weekly.
Applicants
T. A. (pessoa física)
US
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
05/12/1981
RPI 551
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: B32B 31/00; B29D 29/00; B44D 5/04.
03/20/2018
RPI 2463
#21.1
11/24/1992
RPI 1147
Same category
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