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发明名称
DO SPIRAL SPRING MANUFACTURE METHOD AND MANUFACTORY
摘要
申请公布号
KR20060037093(A)
申请公布日期
2006.05.03
申请号
KR20040086241
申请日期
2004.10.27
申请人
SINHYEONG ENGINEERING
发明人
LEE, KYUNG HEE
分类号
B21F3/08
主分类号
B21F3/08
代理机构
代理人
主权项
地址
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