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发明名称
Composition of twisted springs
摘要
申请公布号
USD439198(S1)
申请公布日期
2001.03.20
申请号
US19990106928F
申请日期
1999.06.23
申请人
SARGOYTCHEV STOYAN IVANOV
发明人
SARGOYTCHEV STOYAN IVANOV
分类号
主分类号
代理机构
代理人
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