Solicitação de exame técnico
#4.1
11/29/1988
RPI 945
Application data
Number
PI8507143Type
Filing
Publication
The patent was granted on 02/26/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 11/29/1988. We update with every new RPI gazette, published weekly.
Applicants
Hydril Company
US
Inventors
G. A. (pessoa física)
US
J. R. (pessoa física)
US
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