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发明名称
Vibrator
摘要
申请公布号
US2749097(A)
申请公布日期
1956.06.05
申请号
US19530396581
申请日期
1953.12.07
申请人
VACUUM CONCRETE, INC.
发明人
BILLNER KARL P.
分类号
B06B1/18
主分类号
B06B1/18
代理机构
代理人
主权项
地址
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