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Patent Searching and Data


Title:
【発明の名称】鋼管の円周方向ヤング率が高く圧潰特性に優れた電縫油井管の製造方法
Document Type and Number:
Japanese Patent JP2596860
Kind Code:
B2
Inventors:
Koyumi Kimoto
Naoki Konno
Suzuki Noriaki
Kobata Masaaki
Application Number:
JP1347091A
Publication Date:
April 02, 1997
Filing Date:
February 04, 1991
Export Citation:
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Assignee:
Nippon Steel Corporation
International Classes:
B21B3/00; B21B19/00; B21B19/10; B21C37/30; C21D8/10; C22C38/00; C22C38/04; (IPC1-7): C21D8/10; B21B3/00; B21B19/10; B21C37/30; C22C38/00; C22C38/04
Domestic Patent References:
JP5623223A
JP542970A
JP4254521A
Attorney, Agent or Firm:
Kazuo Ozeki