Title:
ビレットの穿孔方法
Document Type and Number:
Japanese Patent JP4117955
Kind Code:
B2
Inventors:
Katsushi Yasunaga
Yamazaki Motoharu
Tatsuo Takaoka
Kenji Ikai
Yamazaki Motoharu
Tatsuo Takaoka
Kenji Ikai
Application Number:
JP36581798A
Publication Date:
July 16, 2008
Filing Date:
December 24, 1998
Export Citation:
Assignee:
NKK Seamless Steel Pipe Co., Ltd.
International Classes:
B21B19/04
Domestic Patent References:
JP1181905A | ||||
JP45009055B1 |
Foreign References:
FR1142490A1 |
Attorney, Agent or Firm:
Hajime Tsukuni
Fumio Shinoda
Koshiro Tsukuda
Fumio Shinoda
Koshiro Tsukuda
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