Title:
ヘアピン曲げ銅管および銅管のヘアピン曲げ加工方法
Document Type and Number:
Japanese Patent JP4598371
Kind Code:
B2
Inventors:
Masatoshi Yoshida
Masaki Kobayashi
Tetsuo Uchida
Masaki Kobayashi
Tetsuo Uchida
Application Number:
JP2003119412A
Publication Date:
December 15, 2010
Filing Date:
April 24, 2003
Export Citation:
Assignee:
Kobelco Material Copper Tube Co., Ltd.
International Classes:
B21D7/00; F28F9/26; B21D7/025; B21D9/05; F28F21/08
Domestic Patent References:
| JP62176616A | ||||
| JP1309732A | ||||
| JP3204120A | ||||
| JP2002146454A | ||||
| JP57056514U | ||||
| JP59094722U |
Attorney, Agent or Firm:
Yoshiyuki Kaji