Pedido de patente depositado
#2.1
04/18/1989
RPI 965
Application data
Number
PI8806585Type
Filing
Publication
The letters patent expired on 09/02/2008: 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: 04/18/1989. We update with every new RPI gazette, published weekly.
Applicants
Halliburton Company
US
O. C. (pessoa física)
US
Inventors
C. C. (pessoa física)
US
E. L. (pessoa física)
GB
P. C. (pessoa física)
GB
IPC Classification
Priority claims
GB
8821713.8 · 09/16/1988
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
04/18/1989
RPI 965
#21.1
Patente extinta em 14/12/2003
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