Deferimento
#9.1
12/05/1989
RPI 998
Application data
Number
PI8406811Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 12/05/1989. We update with every new RPI gazette, published weekly.
Applicants
Hydril Company
US
Inventors
L. L. (pessoa física)
US
IPC Classification
Priority claims
US
488.633 · 04/26/1983
US
488.778 · 04/26/1983
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