Solicitação de exame técnico
#4.1
09/13/1988
RPI 934
Application data
Number
PI8605620Type
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: 09/13/1988. We update with every new RPI gazette, published weekly.
Applicants
Hydril Company
US
Inventors
J. R. (pessoa física)
US
IPC Classification
Priority claims
US
707.760 · 03/04/1985
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