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发明名称
Precision frequency piezoelectric crystals
摘要
申请公布号
US3122662(A)
申请公布日期
1964.02.25
申请号
US19620197158
申请日期
1962.05.23
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MASON WARREN P.
分类号
H03H9/02;H03H9/17
主分类号
H03H9/02
代理机构
代理人
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