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发明名称
Apparatus for frequency division
摘要
申请公布号
US2660668(A)
申请公布日期
1953.11.24
申请号
US19490133057
申请日期
1949.12.15
申请人
WILLIAMS JOHN C
发明人
WILLIAMS JOHN C.
分类号
H03B19/12
主分类号
H03B19/12
代理机构
代理人
主权项
地址
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