Solicitação de exame técnico
#4.1
05/09/1989
RPI 968
The letters patent expired on 10/03/1995: 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: 05/09/1989. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais - USIMINAS (Grupo Siderbrás)
MG, BR
Inventors
C. C. (pessoa física)
BR
C. P. (pessoa física)
BR
J. S. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/09/1989
RPI 968
01/31/1989
RPI 954
#4.2
08/09/1988
RPI 929
#3.1
02/10/1987
RPI 851
#2.1
09/03/1985
RPI 776
#21.1
10/03/1995
RPI 1296
#16.1
09/25/1990
RPI 1034
#13.1
05/29/1990
RPI 1020
#9.1
02/06/1990
RPI 1005
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Same category
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