Title:
多重管の製造方法及び多重管の製造装置
Document Type and Number:
Japanese Patent JP4232868
Kind Code:
B2
Inventors:
Tomoyuki Nakajima
Youji Tashiro
Tamio Ashino
Youji Tashiro
Tamio Ashino
Application Number:
JP2003148631A
Publication Date:
March 04, 2009
Filing Date:
May 27, 2003
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
B21D9/00; B21D9/15; B21D53/84
Domestic Patent References:
| JP53113256A | ||||
| JP54148171A | ||||
| JP54024980A |
Attorney, Agent or Firm:
Toshio Tsuruwaka