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发明名称
Piezoelectric device
摘要
申请公布号
US2123227(A)
申请公布日期
1938.07.12
申请号
US19350028414
申请日期
1935.06.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BIELING CARL A.
分类号
H03H3/02
主分类号
H03H3/02
代理机构
代理人
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地址
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