Title:
【発明の名称】内面楕円管の製造方法
Document Type and Number:
Japanese Patent JP3090058
Kind Code:
B2
Inventors:
Tatsuya Okui
Application Number:
JP22813096A
Publication Date:
September 18, 2000
Filing Date:
August 29, 1996
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
F22B37/22; B21B17/14; (IPC1-7): B21B17/14
Domestic Patent References:
| JP60247404A |
Attorney, Agent or Firm:
Morio Mori (1 outside)