Solicitação de exame técnico
#4.1
09/20/1988
RPI 935
Application data
Number
PI8705434Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 09/20/1988. We update with every new RPI gazette, published weekly.
Applicants
Schlumberger Industries
FR
Inventors
E. D. (pessoa física)
FR
M. B. (pessoa física)
FR
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
09/20/1988
RPI 935
#3.1
05/24/1988
RPI 918
#2.1
01/05/1988
RPI 898
#21.1
Patente extinta em 09/10/2002
07/29/2008
RPI 1960
#16.1
08/30/1994
RPI 1239
#9.1
04/05/1994
RPI 1218
From the same holder
Same category
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