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
Transformadores União Ltda
SP, BR
Inventors
C. H. (pessoa física)
BR
J. S. (pessoa física)
BR
R. G. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/09/1989
RPI 968
#3.1
03/10/1987
RPI 855
#2.1
10/08/1985
RPI 781
#21.1
10/03/1995
RPI 1296
#16.1
12/31/1991
RPI 1100
#13.1
09/10/1991
RPI 1084
#9.1
05/28/1991
RPI 1069
#6.1
11/13/1990
RPI 1041
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