Title:
熱間押広げ穿孔用プラグおよびそれを用いた加工方法
Document Type and Number:
Japanese Patent JP4144438
Kind Code:
B2
Inventors:
Hiroshi Matsuo
Application Number:
JP2003164898A
Publication Date:
September 03, 2008
Filing Date:
June 10, 2003
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
B21C25/04; B21C23/08
Domestic Patent References:
| JP50117140U |
Attorney, Agent or Firm:
Michio Mori
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