Title:
リング材の矯正方法
Document Type and Number:
Japanese Patent JP4360721
Kind Code:
B2
Inventors:
Yasuo Watanabe
Tsuneo Minagawa
Tadanobu Miyakawa
Tsuneo Minagawa
Tadanobu Miyakawa
Application Number:
JP33198099A
Publication Date:
November 11, 2009
Filing Date:
November 22, 1999
Export Citation:
Assignee:
Dai-ichi Kogyo Kogyo Co., Ltd.
International Classes:
B21D3/00; B21D3/14
Domestic Patent References:
| JP50057060A | ||||
| JP61182615U |
Attorney, Agent or Firm:
Kyozo Norimatsu