Publicação do pedido de patente
#3.1
04/04/1989
RPI 963
Application data
Number
PI8804529Type
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: 04/04/1989. We update with every new RPI gazette, published weekly.
Applicants
Halliburton Company
US
Inventors
B. B. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
04/04/1989
RPI 963
#2.1
01/31/1989
RPI 954
#21.1
Patente extinta em 02/09/2003
09/02/2008
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11/15/1994
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07/19/1994
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04/12/1994
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07/20/1993
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07/02/1991
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