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发明名称
Improvements in or relating to coaxially mounted crystals
摘要
申请公布号
GB669845(A)
申请公布日期
1952.04.09
申请号
GB19490008251
申请日期
1949.03.25
申请人
MINISTER OF SUPPLY
发明人
HOULDING NORMAN
分类号
H01P1/00;H03D9/06
主分类号
H01P1/00
代理机构
代理人
主权项
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