Solicitação de exame técnico
#4.1
06/13/1989
RPI 973
Application data
Number
PI8606999Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 06/13/1989. We update with every new RPI gazette, published weekly.
Applicants
Baker Hughes Limited
GB
Solpro Manufacturing Limited
GB
T. S. (pessoa física)
GB
Inventors
B. K. (pessoa física)
GB
E. W. (pessoa física)
GB
M. D. (pessoa física)
GB
IPC Classification
Priority claims
GB
8529511 · 11/29/1985
GB
8620135 · 08/19/1986
Publications in the Brazilian Industrial Property Gazette (RPI).
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06/13/1989
RPI 973
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Patente extinta em 28/11/2001
07/22/2008
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#25.1
Transferido de: Solpro Manufacturing Limited
10/06/1998
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11/12/1996
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12/05/1995
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02/08/1994
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