Carta-patente expirada
#21.1
Patente extinta em 06/07/2005
05/25/2010
RPI 2055
Application data
Number
PI9003229Type
Filing
Publication
The letters patent expired on 05/25/2010: 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: 05/25/2010. We update with every new RPI gazette, published weekly.
Applicants
Western Atlas International, Inc
US
Inventors
C. B. (pessoa física)
US
R. C. (pessoa física)
US
W. L. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 06/07/2005
05/25/2010
RPI 2055
#16.1
07/25/1995
RPI 1286
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01/31/1995
RPI 1261
#4.1
04/26/1994
RPI 1221
#3.1
01/28/1992
RPI 1104
#2.1
01/02/1991
RPI 1048
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Same category
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