Title:
【発明の名称】段付き異形管の製造方法
Document Type and Number:
Japanese Patent JP3359947
Kind Code:
B2
Inventors:
Shigeru Morikawa
Tsutomu Azuma
Takefumi Nakako
Tsutomu Azuma
Takefumi Nakako
Application Number:
JP6469593A
Publication Date:
December 24, 2002
Filing Date:
March 01, 1993
Export Citation:
Assignee:
Nisshin Steel Co., Ltd.
International Classes:
B21C37/15; B21D5/12; B21D31/00; B21D39/04; B21D41/04; B21D51/16; (IPC1-7): B21D31/00; B21C37/15; B21D5/12; B21D39/04; B21D51/16
Domestic Patent References:
| JP4954264A | ||||
| JP57142715A | ||||
| JP63242404A | ||||
| JP5124573A | ||||
| JP6137321A | ||||
| JP4118115A | ||||
| JP4162920A | ||||
| JP5077263A | ||||
| JP63230222A | ||||
| JP6229655A |
Attorney, Agent or Firm:
Wataru Ogura