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发明名称
Vibrator device
摘要
申请公布号
US2667749(A)
申请公布日期
1954.02.02
申请号
US19520295526
申请日期
1952.06.25
申请人
SERGEY STEUERMAN
发明人
STEUERMAN SERGEY
分类号
E02D3/054
主分类号
E02D3/054
代理机构
代理人
主权项
地址
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