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发明名称
Vibratory frequency standard for a timekeeping device
摘要
申请公布号
US3320738(A)
申请公布日期
1967.05.23
申请号
US19650476776
申请日期
1965.06.24
申请人
UNITED STATES TIME CORPORATION
发明人
SPARING KLAUS;TILSE WILHELM
分类号
G04C3/10
主分类号
G04C3/10
代理机构
代理人
主权项
地址
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