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经营范围
发明名称
Rotation stressed piezoelectric apparatus
摘要
申请公布号
US2686882(A)
申请公布日期
1954.08.17
申请号
US19520268545
申请日期
1952.01.28
申请人
MALLINCKRODT GEORGE E
发明人
MALLINCKRODT GEORGE E.
分类号
F23Q2/28;F23Q3/00;H01L41/113
主分类号
F23Q2/28
代理机构
代理人
主权项
地址
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