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1.发明公开COMPRESSION COIL SPRING, AND COIL SPRING MANUFACTURING DEVICE AND MANUFACTURING METHOD 有权压缩螺旋弹簧和器件及其制造螺旋弹簧的
公开(公告)号：EP2416031A4
公开(公告)日：2015-04-15
申请号：EP10758437
申请日：2010-03-18
Applicant: NHK SPRING CO LTD
Inventor： HAMANO TOSHIO , OKADA HIDEKI , YAMAMOTOYA KENJI
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