Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuhiro Shimoda0
Tomio Yamakawa0
Date of Patent
August 25, 2009
0Patent Application Number
121556580
Date Filed
June 6, 2008
0Patent Primary Examiner
Patent abstract
To provide a method and apparatus for seamless tubes in which the occurrence of material peeling can be prevented even when the skew angle δ and tube expansion ratio are increased.
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