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发明名称
Piezoelectric controlled oscillator
摘要
申请公布号
US2189770(A)
申请公布日期
1940.02.13
申请号
US19380219959
申请日期
1938.07.19
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
SAMUEL ARTHUR L.
分类号
H03B5/34
主分类号
H03B5/34
代理机构
代理人
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地址
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