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发明名称
Piezoelectric crystal apparatus
摘要
申请公布号
US2277709(A)
申请公布日期
1942.03.31
申请号
US19400369694
申请日期
1940.12.12
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MCSKIMIN HERBERT J.;SYKES ROGER A.
分类号
H03H9/00;H03H9/02;H03H9/19;H03H9/54;H03H9/56;H03H9/60
主分类号
H03H9/00
代理机构
代理人
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